Seal of Doom

If you control a Plains, you may tap an untapped creature you control rather than pay this spell's mana cost. Cast this spell only during combat. Create a 4/4 white Angel creature token with flying. Exile it at the beginning of the next end step.

2W, T, Discard a card: Exile target attacking creature. Its controller gains life equal to its toughness.

Flying (This creature can't be blocked except by creatures with flying or reach.) Whenever this creature deals combat damage to a player, that player skips their next combat phase.

Whenever this creature attacks, attacking creatures gain first strike until end of turn.

Fading 4 (This creature enters with four fade counters on it. At the beginning of your upkeep, remove a fade counter from it. If you can't, sacrifice it.) Remove a fade counter from this creature: Prevent the next 2 damage that would be dealt to any target this turn.

Flying 4, T: Search your library for a Rebel permanent card with mana value 3 or less, put it onto the battlefield, then shuffle.

When this creature blocks, at end of combat, destroy it and all creatures it blocked this turn. 5, T: Search your library for a Rebel permanent card with mana value 4 or less, put it onto the battlefield, then shuffle.

Sacrifice a creature: Regenerate target creature.