Sarkhan Unbroken

Dragon spells you cast cost 1 less to cast.

Flying

Flying 2: This creature gets +1/+0 until end of turn. X: Destroy each nonland permanent with mana value X whose controller was dealt combat damage by this creature this turn. Activate only once each turn.

(T: Add R.)

Flying Whenever Korvold enters or attacks, sacrifice another permanent. Whenever you sacrifice a permanent, put a +1/+1 counter on Korvold and draw a card.

Whenever a creature you control with flying enters, it gains haste until end of turn. Whenever a Dragon you control enters, it deals X damage to any target, where X is the number of Dragons you control.