Unrooted Ancestor

Flash
{1}, Sacrifice another creature: This creature gains indestructible until end of turn. Tap it. (Damage and effects that say "destroy" don't destroy it.)

Venerated Stormsinger

Warrior

Mobilize 1 (Whenever this creature attacks, create a tapped and attacking 1/1 red Warrior creature token. Sacrifice it at the beginning of the next end step.)
Whenever this creature or another creature you control dies, each opponent loses 1 life and you gain 1 life.

Wail of War

Choose one —
• Creatures target opponent controls get -1/-1 until end of turn.
• Return up to two target creature cards from your graveyard to your hand.

Worthy Cost

As an additional cost to cast this spell, sacrifice a creature.
Exile target creature or planeswalker.

Tarkir: Dragonstorm