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 a Dragon you control attacks, create a 6/6 red Dragon creature token with flying.
{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.)
Whenever you gain life, target opponent loses that much life.
Fear (This creature can't be blocked except by artifact creatures and/or black creatures.) Whenever Shadowmage Infiltrator deals combat damage to a player, you may draw a card.
Draw cards equal to the power of target creature you control.
Flying Whenever Scourge of Valkas or another Dragon enters the battlefield under your control, it deals X damage to target creature or player, where X is the number of Dragons you control. {R}: Scourge of Valkas gets +1/+0 until end of turn.
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.
Crackling Doom deals 2 damage to each opponent. Each opponent sacrifices a creature with the greatest power among creatures he or she controls.