Enchant creature Enchanted creature has haste and "At the beginning of your upkeep, destroy this creature. Reveal cards from the top of your library until you reveal a creature card. Put that card onto the battlefield and attach Shifting Shadow to it, then put all other cards revealed this way on the bottom of your library in a random order."
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.
Choose one — • Destroy all Dragon creatures. • Destroy all non-Dragon creatures.
Flying Whenever you draw a card, Niv-Mizzet, the Firemind deals 1 damage to target creature or player. {T}: Draw a card.
Flying Whenever Niv-Mizzet, Dracogenius deals damage to a player, you may draw a card. {U}{R}: Niv-Mizzet, Dracogenius deals 1 damage to target creature or player.
Flying, haste At the beginning of combat on your turn, choose an opponent at random that Territorial Hellkite didn't attack during your last combat. Territorial Hellkite attacks that player this combat if able. If you can't choose an opponent this way, tap Territorial Hellkite.
Flying {2}: Steel Hellkite gets +1/+0 until end of turn. {X}: Destroy each nonland permanent with converted mana cost X whose controller was dealt combat damage by Steel Hellkite this turn. Activate this ability only once each turn.
Whenever a creature dies, put a charge counter on Black Market. At the beginning of your precombat main phase, add {B} to your mana pool for each charge counter on Black Market.
Dethrone (Whenever this creature attacks the player with the most life or tied for most life, put a +1/+1 counter on it.) Other creatures you control have dethrone. Whenever a creature you control with a +1/+1 counter on it dies, return that card to the battlefield under your control at the beginning of the next end step.
{U}, {T}, Sacrifice Magus of the Mind: Shuffle your library, then exile the top X cards, where X is one plus the number of spells cast this turn. Until end of turn, you may play cards exiled this way without paying their mana costs.
Flash When Portal Mage enters the battlefield during the declare attackers step, you may reselect which player or planeswalker target attacking creature is attacking. (It can't attack its controller or its controller's planeswalkers.)
Search your library for a Plains, Island, Swamp, or Mountain card and put it onto the battlefield tapped. Then shuffle your library.
Indestructible {T}: Add one mana of any color to your mana pool.