So I've been watching The Commander's Quaters lately and I found a combo that I like. Magda, Imagecrafter, and Aphetto Alchemist is a three card combo he was talking about that results in infinite mana. Trying to make something around this, I started to add Hellkite Tyrant
The question is, at the beginning of the player's end step, the one before you, can you do the infinite loop creating 20+ artifacts to meet Hellkite Tyrant's requirements of 20+ artifacts you win the game
The relevant trigger is "At the beginning of your upkeep, if you control twenty or more artifacts, you win the game." Because this has an intervening if, it must be true to trigger OR resolve. You can't put the trigger on the stack then get 20 artifacts, it won't even go on the stack in that case. Remember "At the beginning of your upkeep" only happens once.
You will get a more detailed answer if you post in the Rules Q&A forum.
And I've been partially working on the list and found a few more combos
Leyline Tyrant says that when it dies you can pay however much red mana and it does damage equal to the amount paid. This with Goldspan dragon, because it makes treasures produce 2 instead of 1, and Toralf because you make as much mana as you think you need to do lethal plus however much damage to a creature or planeswalker to activate Toralf
Then there's Lathliss and Terror of the Twin Peaks. When you start off the combo you want to find Lathliss, then go get Twin. Because Twin does not exclude tokens, everything you play comes in with a 5/5 dragon buddy, which Terror then throws it for an additional 5 damage. Just need to ensure that the next thing after Terror that you grab is Maskwood Nexus. You could even do this past piece with a sac outlet and Elixer of Immortality.