Disdainful Stroke

Counter target spell with converted mana cost 4 or greater.

Sleep

Dive Down

U

Entrancing Melody

XUU

Siren Stormtamer

U

Spell Pierce

U

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.

Essence Capture

Counter target creature spell. Put a +1/+1 counter on up to one target creature you control.

Pteramander

Flying {7}{U}: Adapt 4. This ability costs {1} less to activate for each instant and sorcery card in your graveyard. (If this creature has no +1/+1 counters on it, put four +1/+1 counters on it.)

Negate

Counter target noncreature spell.

Opt

Scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.) Draw a card.