Echoing Truth

Return target nonland permanent and all other permanents with the same name as that permanent to their owners' hands.

Negate

Slither Blade

Crashing Drawbridge

Defender
{T}: Creatures you control gain haste until end of turn.

Swiftfoot Boots

Equipped creature has hexproof and haste. (It can't be the target of spells or abilities your opponents control.)
Equip {1}

Mirrorweave

Each other creature becomes a copy of target nonlegendary creature until end of turn.

Invisible Stalker

Hexproof (This creature can't be the target of spells or abilities your opponents control.)
Invisible Stalker can't be blocked.

Curious Obsession

Enchant creature
Enchanted creature gets +1/+1 and has "Whenever this creature deals combat damage to a player, you may draw a card."
At the beginning of your end step, if you didn't attack with a creature this turn, sacrifice Curious Obsession.

Illusory Angel

Cast this spell only if you've cast another spell this turn.
Flying

Spark Double

You may have Spark Double enter as a copy of a creature or planeswalker you control, except it enters with an additional +1/+1 counter on it if it's a creature, it enters with an additional loyalty counter on it if it's a planeswalker, and it isn't legendary.