Vadrok, Apex of Thunder, Frontline Heroism, and Snap

Prerequisites

• Vadrok, Apex of Thunder in hand or in the command zone
• Frontline Heroism on the battlefield
• Snap in the graveyard
• plus commander tax if applicable available

Steps

1. Activate up to two lands by tapping them, adding at least Cast Vadrok either from your hand or from the command zone for its mutate cost by paying plus commander tax, if applicable, targeting a non-Human creature you control
2. Frontline Heroism's second ability triggers, creating a 1/1 Soldier creature token with haste, and then copying the Vadrok spell targeting the Soldier
3. Resolve the copy of the Vadrok spell, putting it underneath the Soldier token
4. The Vadrok and Soldier token trigger, casting Snap from your graveyard without paying its mana cost
5. Resolve Snap, returning a creature from the battlefield to its owner's hand and untapping up to two lands
6. Holding priority, activate up to two lands by tapping them, adding at least
7. Resolve the original Vadrok spell, putting it underneath the creature it targeted
8. The Vadrok mutated creature triggers, casting Snap from your graveyard without paying its mana cost
9. Resolve Snap, returning the nontoken Vadrok mutated creature from the battlefield to its owner's hand and untapping up to two lands
10. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite storm count
• Infinite magecraft triggers
• Infinite casts of noncreature cards with mana value 3 or less from your graveyard
• Return any number of creatures to their owners' hands