Firebending 1 Tap an untapped Ally you control: Exile target card from a graveyard. Whenever this creature attacks, you may cast an Ally spell from among cards you own exiled with this creature.
2025-10-02
Since Boiling Rock Rioter's activated ability doesn't have a tap symbol in its cost, you can tap a creature (including Boiling Rock Rioter itself) that hasn't been under your control since your most recent turn began to pay the cost.