Starting your question with "if so" make it seem like walking into the end of a conversation. Also your question is very strange.
All spells and nearly all abilities use the stack. So any cast creature goes on the stack. And you can cast as many spells as you have the means to pay.
If this doesn't answer your question try asking again, it's hard to decipher what you are asking.
You usually can cast creature spells only with sorcery timing, which means, it must be your main phase, you must have priority, and the stack must be empty. So usually you have to let a creeature spell resolve before casting the next. In order to cast a creature spell whie another is still on the stack, the second one would have to have flash (like Pouncing Cheetah).
I'm going to hazard a guess that part of the intent of the question is about whether you can cast multiple creature spells in a row in general. You absolutely can do this, in the sense that your main phase doesn't end until all players have passed priority while the stack is empty.
The typical sequence is:
1. It is your main phase, nothing is on the stack, and you have priority. You cast a creature spell. It goes onto the stack.
2. You get priority again when you are finished casting the spell. You can cast instants or spells with flash at this time, but you normally can't cast another creature right now because the stack isn't empty. So instead you pass priority.
3. Your opponent gets priority. Here is the point where they could make a relevant response (for example, by playing Essence Scatter or Gather Specimens) but in this case they have no response, so they pass too.
4. The creature spell resolves and it enters the battlefield. To keep the example simple, let's assume this do sn't trigger any abilities.
5. Because it's your turn and something just finished resolving, you get priority again. It's still your main phase and the stack is empty again, so you can cast another creature spell now. The same steps happen again.
6. When you have nothing else to do, you pass priority while the stack is empty. Your opponent gets priority and can take actions - for example, they might want to destroy a Goblin Rabblemaster you control before your main phase ends - and if they do, you get priority to respond to their spell and again after it has resolved. But in this case your opponent doesn't do anything and passes. Since both players have passed priority consecutively while the stack was empty, the main phase now ends.
Even if you could respond to the first creature spell by casting the second (e.g. because it's a creature with flash, as in Rezzahan's example) it's usually tactically better to play them one at a time anyway, because then your opponent has to decide how to respond to the first one without knowing whether you will play another or what the second one is.
I'm going to hazard a guess that part of the intent of the question is about whether you can cast multiple creature spells in a row in general. You absolutely can do this, in the sense that your main phase doesn't end until all players have passed priority while the stack is empty.
The typical sequence is:
1. It is your main phase, nothing is on the stack, and you have priority. You cast a creature spell. It goes onto the stack.
2. You get priority again when you are finished casting the spell. You can cast instants or spells with flash at this time, but you normally can't cast another creature right now because the stack isn't empty. So instead you pass priority.
3. Your opponent gets priority. Here is the point where they could make a relevant response (for example, by playing Essence Scatter or Gather Specimens) but in this case they have no response, so they pass too.
4. The creature spell resolves and it enters the battlefield. To keep the example simple, let's assume this do sn't trigger any abilities.
5. Because it's your turn and something just finished resolving, you get priority again. It's still your main phase and the stack is empty again, so you can cast another creature spell now. The same steps happen again.
6. When you have nothing else to do, you pass priority while the stack is empty. Your opponent gets priority and can take actions - for example, they might want to destroy a Goblin Rabblemaster you control before your main phase ends - and if they do, you get priority to respond to their spell and again after it has resolved. But in this case your opponent doesn't do anything and passes. Since both players have passed priority consecutively while the stack was empty, the main phase now ends.
Even if you could respond to the first creature spell by casting the second (e.g. because it's a creature with flash, as in Rezzahan's example) it's usually tactically better to play them one at a time anyway, because then your opponent has to decide how to respond to the first one without knowing whether you will play another or what the second one is.
All spells and nearly all abilities use the stack. So any cast creature goes on the stack. And you can cast as many spells as you have the means to pay.
If this doesn't answer your question try asking again, it's hard to decipher what you are asking.
Former Rules Advisor
"Everything's better with pirates." - Lodge
(The Gamers: Dorkness Rising)
"Any sufficiently analyzed magic is indistinguishable from science."
(Girl Genius - Fairy Tale Theater Break - Cinderella, end of volume 8)
The typical sequence is:
1. It is your main phase, nothing is on the stack, and you have priority. You cast a creature spell. It goes onto the stack.
2. You get priority again when you are finished casting the spell. You can cast instants or spells with flash at this time, but you normally can't cast another creature right now because the stack isn't empty. So instead you pass priority.
3. Your opponent gets priority. Here is the point where they could make a relevant response (for example, by playing Essence Scatter or Gather Specimens) but in this case they have no response, so they pass too.
4. The creature spell resolves and it enters the battlefield. To keep the example simple, let's assume this do sn't trigger any abilities.
5. Because it's your turn and something just finished resolving, you get priority again. It's still your main phase and the stack is empty again, so you can cast another creature spell now. The same steps happen again.
6. When you have nothing else to do, you pass priority while the stack is empty. Your opponent gets priority and can take actions - for example, they might want to destroy a Goblin Rabblemaster you control before your main phase ends - and if they do, you get priority to respond to their spell and again after it has resolved. But in this case your opponent doesn't do anything and passes. Since both players have passed priority consecutively while the stack was empty, the main phase now ends.
Even if you could respond to the first creature spell by casting the second (e.g. because it's a creature with flash, as in Rezzahan's example) it's usually tactically better to play them one at a time anyway, because then your opponent has to decide how to respond to the first one without knowing whether you will play another or what the second one is.
thanks for explaining this so well!