Time to Reflect
Amonkhet — uncommon
Instant
Time to Reflect rulings:
2017-04-18: Time to Reflect can target a creature that’s currently blocking or being blocked by a Zombie, or one that blocked or was blocked by a Zombie earlier in the turn.
2017-04-18: Time to Reflect only cares that the second creature was a Zombie at the moment it blocked or became blocked by the target creature. If that Zombie has become a non-Zombie creature or left the battlefield, Time to Reflect can still target the first creature.