Keyword: Flash

Flash (You may cast this spell any time you could cast an instant.)
Reach (This creature can block creatures with flying.)
Whenever another non-Human creature you control enters, you may pay . When you do, put X +1/+1 counters on this creature.

Flash (You may cast this spell any time you could cast an instant.)
Whenever you cast a spell during an opponent’s turn, put a +1/+1 counter on this creature.

Flash (You may cast this spell any time you could cast an instant.)
Flying
You can’t lose the game and your opponents can’t win the game.

Flash
, Sacrifice this creature: Destroy target artifact or enchantment.

Flash (You may cast this spell any time you could cast an instant.)
Flying
You may cast spells as though they had flash.

Flash
, , Sacrifice this artifact: Destroy target permanent.

Flash (You may cast this spell any time you could cast an instant.)
When this Equipment enters, attach it to target creature you control. That creature gains hexproof and indestructible until end of turn.
Equipped creature gets +2/+0 and has flying.
Equip (: Attach to target creature you control. Equip only as a sorcery.)

Flash (You may cast this spell any time you could cast an instant.)
Flying
Whenever this creature attacks, target instant or sorcery card in your graveyard gains flashback until end of turn. The flashback cost is equal to that card’s mana cost. (You may cast that card from your graveyard for its flashback cost. Then exile it.)

Flash (You may cast this spell any time you could cast an instant.)
Flying
You can’t lose the game and your opponents can’t win the game.

Flash (You may cast this spell any time you could cast an instant.)
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

Flash (You may cast this spell any time you could cast an instant.)
Flying
You may cast spells as though they had flash.

Flash (You may cast this spell any time you could cast an instant.)
Flying
You may cast spells as though they had flash.

Flash (You may cast this spell any time you could cast an instant.)
When this creature enters, create a 1/1 white Soldier creature token.

Flash
When this enchantment enters, exile up to one target nonland permanent an opponent controls until this enchantment leaves the battlefield. You gain 2 life.

Flash (You may cast this spell any time you could cast an instant.)
When this creature enters, counter target artifact or creature spell.

Flash (You may cast this spell any time you could cast an instant.)
When this Equipment enters, attach it to target creature you control. That creature gains hexproof and indestructible until end of turn.
Equipped creature gets +2/+0 and has flying.
Equip (: Attach to target creature you control. Equip only as a sorcery.)

Flash (You may cast this spell any time you could cast an instant.)
Flying
You may cast spells as though they had flash.

Flash (You may cast this spell any time you could cast an instant.)
Enchant creature
Enchanted creature loses all abilities and is a black Skeleton creature with base power and toughness 1/1. (It loses all other colors, card types, and creature types.)

Flash (You may cast this spell any time you could cast an instant.)
Flying
You can’t lose the game and your opponents can’t win the game.

Flash
Vigilance
When Floodpits Drowner enters, tap target creature an opponent controls and put a stun counter on it.
, : Shuffle Floodpits Drowner and target creature with a stun counter on it into their owners’ libraries.

Flash
Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for or one mana of that creature’s color.)
Double strike
Other tapped creatures you control have hexproof.

Flash
Eerie — Whenever an enchantment you control enters and whenever you fully unlock a Room, draw a card.

Flash
Whenever a creature you control deals combat damage to a player, draw a card.
When Enduring Curiosity dies, if it was a creature, return it to the battlefield under its owner’s control. It’s an enchantment. (It’s not a creature.)

Flash
When Cast Out enters, exile target nonland permanent an opponent controls until Cast Out leaves the battlefield.
Cycling (, Discard this card: Draw a card.)