Requires

Double Major must be in hand. Vadrok, Apex of Thunder must be in hand. You control at least one non-Human creature. Mana needed:

Steps

1. Cast Vadrok for its mutate cost by paying , targeting any non-Human creature.
2. Holding priority, cast Double Major by paying , targeting the Vadrok spell.
3. Resolve Double Major, copying the Vadrok spell, targeting the non-Human creature.
4. Resolve the copy of the Vadrok spell, putting it under the non-Human creature.
5. Vadrok triggers, casting Double Major from your graveyard without paying its mana cost, targeting the Vadrok spell.
6. Repeat from step 3.
7. With each iteration, you will gain an additional Vadrok trigger, which you can use to cast any other noncreature spells with mana value three or less in your graveyard,

Results