Keyword: Flash

Caller of the Claw

Flash
When Caller of the Claw enters the battlefield, create a 2/2 green Bear creature token for each nontoken creature put into your graveyard from the battlefield this turn.

Quick Sliver

Flash
Any player may cast Sliver spells as though they had flash.

Teroh’s Vanguard

Flash
Threshold — As long as seven or more cards are in your graveyard, Teroh’s Vanguard has “When Teroh’s Vanguard enters the battlefield, creatures you control gain protection from black until end of turn.”

Mystic Snake

Flash
When Mystic Snake enters the battlefield, counter target spell.

Fleetfoot Panther

Flash
When Fleetfoot Panther enters the battlefield, return a green or white creature you control to its owner’s hand.

Alexi’s Cloak

Flash
Enchant creature
Enchanted creature has shroud. (It can’t be the target of spells or abilities.)

Latulla’s Orders

Flash
Enchant creature
Whenever enchanted creature deals combat damage to defending player, you may destroy target artifact that player controls.

Flaming Sword

Flash
Enchant creature
Enchanted creature gets +1/+0 and has first strike.

Tiger Claws

Flash
Enchant creature
Enchanted creature gets +1/+1 and has trample.

Vine Dryad

You may exile a green card from your hand rather than pay this spell’s mana cost.
Flash
Forestwalk (This creature can’t be blocked as long as defending player controls a Forest.)

Buoyancy

Flash
Enchant creature
Enchanted creature has flying.

Cho-Manno’s Blessing

Flash
Enchant creature
As Cho-Manno’s Blessing enters the battlefield, choose a color.
Enchanted creature has protection from the chosen color. This effect doesn’t remove Cho-Manno’s Blessing.

Maggot Therapy

Flash
Enchant creature
Enchanted creature gets +2/-2.

Simian Grunts

Flash
Echo (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)

Benalish Knight

Flash (You may cast this spell any time you could cast an instant.)
First strike (This creature deals combat damage before creatures without first strike.)