Flying, first strike, haste

Flying

: Mistform Seaswift becomes the creature type of your choice until end of turn.

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

Lifelink

When Murderous Rider dies, put it on the bottom of its owner's library.

Flash

When Singer of Swift Rivers enters the battlefield, put a shield counter on another target creature you control. (If it would be dealt damage or destroyed, remove a shield counter from it instead.)

You may cast Merfolk spells as though they had flash.

Until end of turn, target creature gets +1/+0 and gains first strike and lifelink.

Prevent the next 2 damage that would be dealt to any target this turn.

Draw a card at the beginning of the next turn's upkeep.

Flash

Enchant creature or Vehicle

Enchanted permanent is a Vehicle artifact with crew 5 and it loses all other card types. (It's not a creature unless it's crewed.)

Counter all other spells. Draw a card for each spell countered this way.

Exile target nontoken creature. Return it to the battlefield under its owner's control at the beginning of the next end step.

Flying

When Swift Warkite enters the battlefield, you may put a creature card with mana value 3 or less from your hand or graveyard onto the battlefield. That creature gains haste. Return it to your hand at the beginning of the next end step.

Equipped creature has hexproof and haste. (It can't be the target of spells or abilities your opponents control.)

Equip

Swiftwater Cliffs enters the battlefield tapped.

When Swiftwater Cliffs enters the battlefield, you gain 1 life.

: Add or .

Target creature you control deals damage equal to its power to target creature you don't control. Create a number of 1/1 green Elf Warrior creature tokens equal to the amount of excess damage dealt this way.