Lets take Summon: Bahamut as an example
My favorite combo, however, involves Volrath, the Shapestealer + Nacatl War-Pride + Biovisionary: attack an opponent that has at least two creatures, then with the Nacatl's ability on the stack turn Volrath into Biovisionary to win at end of turn
Creature - Human Detective Minn, Wily Illusionist Whenever you draw your second card each turn, create a 1/1 blue Illusion creature token with "This token gets +1/+0 for each other Illusion you control." Whenever an Illusion you control dies, you may put a permanent card with mana value less than or equal to that creature's power from your hand onto the battlefield
Collected Company Duskmourn special guest Im ranking Collected Company low for now, but it could rise in the rankings depending on the remaining Duskmourn spoilers
While this is a great card for defeating any draw-based strategy, don't be surprised when everyone at the table decides to target you after you play it