msem-instigator

Flying, haste
Whenever Scourge of the Skies attacks, you may have it deal 5 damage to target creature.

Vigilance, trample

{U}: Sea Strider gets +1/-1 until end of turn.
{U}: Sea Strider gets -1/+1 until end of turn.

Flash
When Seabreen Nullmage enters the battlefield, counter target activated or triggered ability. (A triggered ability uses the words “when,” “whenever,” or “at”. Mana abilities can't be targeted.)

Flying
Whenever Searshot Dragon deals combat damage to a player, it deals that much damage to target creature that player controls.
{1}{R}: Searshot Dragon gets +1/+0 until end of turn.

Destroy target land. Add {R}{R}.

Enchant creature
Enchanted creature gets +0/+2 and can block an additional creature each combat.

Exile all nontoken creatures. For each creature exiled this way, return that card to the battlefield under a random player's control.

Shredding Gale deals 4 damage to each creature with flying.

Target creature gets -2/-2 until end of turn. Scry 1.

Skavi Behemoth can't be the target of nongreen spells or abilities from nongreen sources.

Equipped creature gets +0/+3 and has menace. (It can't be blocked except by two or more creatures.)
Equip {3}

Flying (This creature can't be blocked except by creatures with flying or reach.)
Whenever Skysovereign Griffin attacks, it gets +1/+0 until end of turn for each other attacking creature with flying you control.

Look at the top two cards of your library. Put one of them into your hand and the other on the bottom of your library.

Choose one—
• Soul Flame deals X damage to target nonred creature.
• Target red creature gets +X/+0 until end of turn.

At the beginning of each end step, if you gained life this turn, put a +1/+1 counter on a creature you control.

Flying, trample
Whenever an opponent casts a noncreature spell, that player loses 5 life unless they sacrifice a creature or discard a card.

Flip a coin. If you win the flip, draw two cards. Otherwise, discard two cards.

Flash (You may cast this spell any time you could cast an instant.)
When Spell Shackle enters the battlefield, exile target instant or sorcery spell. (That spell won't resolve.)
{1}{U}, Sacrifice Spell Shackle: Cast the exiled card without paying its mana cost.

Flying, prowess
When Sphinx Mentor enters the battlefield or dies, draw a card.

Reach (This creature can block creatures with flying.)
When Spider Broodmother dies, create two 1/2 green Spider creature tokens with reach. (This creature can block creatures with flying.)

Destroy target enchantment. Put a +1/+1 counter on target creature you control.

Whenever you cast a noncreature spell, you gain 1 life.

Flying, lifelink
Other creatures you control have lifelink.