With the Primal Surge on the stack, I've exiled about 30 creatures and one of them was Regal Force.
Then, Ive put Regal Force as the first trigger on the stack for Primal Surge. What will happen?
1 - I will draw 6 cards for the Regal Force and then all ETBs after him will solve in the order Ive put everyone of them?
2 - Or I will draw a lot of cards, counting all the green creatures Ive put on the stack with Regal Force after him on the stack? (all the creatures put after Regal Force will force me draw with the Force Regal as the on the stack for Primal Surge?)
Things can't happen in the middle of spells resolving. When Primal Surge resolves, all the creatures are on the battlefield, and only then can their ETB abilities go on the stack. Regal Force will "see" all your other green creatures.
Primal Surge exiles when it resolves. One card after the other. You exile one, then put it on the battlefield, triggering any appropriate abilities. (The card doesn't go to the stack, it goes to exile and then the battlefield). Then the next card, and so on, until Primal Surge stops. Then all triggered abilities that triggered go on the stack, first all of the active player's ones (should normally be you in this scenario) in the order of that player's choosing, then all the other players' ones in turn order. When Regal Force's trigger resolves, you count your green creatures and draw accordingly. This means, that the number of creatures can be manipulated to make you draw more/less cards by adding/removing green creatures under your control after Surge has finished and before Force's trigger resolves.
I was playing with Nikya of the Old Ways as my commander. I had on the table 6 green creatures by now then I cast my Primal Surge.
With the Primal Surge on the stack, I've exiled about 30 creatures and one of them was Regal Force.
Then, Ive put Regal Force as the first trigger on the stack for Primal Surge. What will happen?
1 - I will draw 6 cards for the Regal Force and then all ETBs after him will solve in the order Ive put everyone of them?
2 - Or I will draw a lot of cards, counting all the green creatures Ive put on the stack with Regal Force after him on the stack? (all the creatures put after Regal Force will force me draw with the Force Regal as the on the stack for Primal Surge?)
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)