Keyword: Flash

Flash (You may cast this spell any time you could cast an instant.)
Whenever Illusory Ambusher is dealt damage, draw that many cards.

Flash
When Plaxmanta enters, creatures you control gain shroud until end of turn. (They can’t be the targets of spells or abilities.)
When Plaxmanta enters, sacrifice it unless was spent to cast it.

Flash (You may cast this spell any time you could cast an instant.)
Reach
When Great Oak Guardian enters, creatures target player controls get +2/+2 until end of turn. Untap them.

Flash
Creatures you control get +2/+2.

Devoid (This card has no color.)
Flash
Flying
When Ulamog’s Nullifier enters, you may put two cards your opponents own from exile into their owners’ graveyards. If you do, counter target spell.

Flash (You may cast this spell any time you could cast an instant.)
When this enchantment enters, exile target creature an opponent controls until this enchantment leaves the battlefield.

Flash (You may cast this spell any time you could cast an instant.)
When Affa Guard Hound enters, target creature gets +0/+3 until end of turn.

Flash (You may cast this spell any time you could cast an instant.)
Enchant red or green creature
When Encase in Ice enters, tap enchanted creature.
Enchanted creature doesn’t untap during its controller’s untap step.

Flash (You may cast this spell any time you could cast an instant.)
Flying
Exploit (When this creature enters, you may sacrifice a creature.)
When Silumgar Sorcerer exploits a creature, counter target creature spell.

Flash
Creatures you control get +2/+2.

Flash (You may cast this spell any time you could cast an instant.)
Defender
When Jeskai Barricade enters, you may return another target creature you control to its owner’s hand.

Flash
When Dualcaster Mage enters, copy target instant or sorcery spell. You may choose new targets for the copy.

Flash
When Whitemane Lion enters, return a creature you control to its owner’s hand.

Flash
When Dualcaster Mage enters, copy target instant or sorcery spell. You may choose new targets for the copy.

Flash
If a nontoken creature would enter and it wasn’t cast, exile it instead.

Flash
Flying
When Angel of the Dire Hour enters, if you cast it from your hand, exile all attacking creatures.

Flash
Flying
When Bogardan Hellkite enters, it deals 5 damage divided as you choose among any number of targets.

Flash
Split second (As long as this spell is on the stack, players can’t cast spells or activate abilities that aren’t mana abilities.)
Flying
Other white creatures get +1/+1.

Flash
This spell can’t be countered.
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
Return three lands you control to their owner’s hand: Return Pearl Lake Ancient to its owner’s hand.

Flash
This spell can’t be countered.
Creature spells you control can’t be countered.
Other creatures you control have trample.

Flash (You may cast this spell any time you could cast an instant.)
Flying

Flash (You may cast this spell any time you could cast an instant.)
Vigilance

Flash
Flying
When Stonecloaker enters, return a creature you control to its owner’s hand.
When Stonecloaker enters, exile target card from a graveyard.

Flash
Flying
Creatures entering don’t cause abilities to trigger.