Time Spiral Remastered · TSR · common
Instant
wotc · 2021-03-19
If a card in a player's library has {X} in its mana cost, X is considered to be 0.
wotc · 2021-03-19
You reveal cards and the creature gets +X/-X all while Erratic Mutation is resolving. Nothing can happen in between, and no player can take actions.