Ojutai, Soul of Winter | Legendary Creature | Dragon | Flying, vigilance
Whenever a Dragon you control attacks, tap target nonland permanent an opponent controls. That permanent doesn't untap during its controller's next untap step. | Chase Stone
Harsh Sustenance | Instant | | Harsh Sustenance deals X damage to any target and you gain X life, where X is the number of creatures you control. | Cynthia Sheppard
War Flare | Instant | | Creatures you control get +2/+1 until end of turn. Untap those creatures. | Karl Kopinski
Dromoka, the Eternal | Legendary Creature | Dragon | Flying
Whenever a Dragon you control attacks, bolster 2. (Choose a creature with the least toughness among creatures you control and put two +1/+1 counters on it.) | Eric Deschamps