Flying Whenever Spellbound Dragon attacks, draw a card, then discard a card. Spellbound Dragon gets +X/+0 until end of turn, where X is the discarded card's converted mana cost.
Flying When Broodmate Dragon enters the battlefield, create a 4/4 red Dragon creature token with flying.
As Kindred Boon enters the battlefield, choose a creature type. {1}{W}: Put a divinity counter on target creature you control of the chosen type. Each creature you control with a divinity counter on it has indestructible.
Menace Whenever Kheru Mind-Eater deals combat damage to a player, that player exiles a card from his or her hand face down. You may look at and play cards exiled with Kheru Mind-Eater.
The owner of target permanent shuffles it into his or her library, then reveals the top card of his or her library. If it's a permanent card, he or she puts it onto the battlefield.
Crackling Doom deals 2 damage to each opponent. Each opponent sacrifices a creature with the greatest power among creatures he or she controls.
{1}{G}: You may return another creature you control to its owner's hand. If you do, Temur Sabertooth gains indestructible until end of turn.
When Izzet Chronarch enters the battlefield, return target instant or sorcery card from your graveyard to your hand.
Enchant land Enchanted land has "{T}, Pay 1 life: Draw a card."
Choose two — • Counter target noncreature spell. • Return target permanent to its owner's hand. • Target creature gets -3/-3 until end of turn. • Destroy target planeswalker.
Haste {R}, {T}: Exile target instant or sorcery card from your graveyard. {1}{R}, {T}, Sacrifice Izzet Chemister: Cast any number of cards exiled with Izzet Chemister without paying their mana costs.
{U}, {T}: Draw two cards. {R}, {T}, Discard a card: Mercurial Chemister deals damage to target creature equal to the discarded card's converted mana cost.