When Spelldrain Assassin enters, choose an instant or sorcery card in your hand. It perpetually gains casualty 2.

Kicker
When you cast your next instant or sorcery spell this turn, conjure a duplicate of that spell into your hand. If this spell wasn't kicked, discard the duplicate at the beginning of your next end step.

This spell can't be countered.
Creature spells you control with power 5 or greater can't be countered.

Flying
Whenever this creature attacks, draw a card, then discard a card. This creature gets +X/+0 until end of turn, where X is the discarded card's mana value.

Vigilance
At the beginning of combat on your turn, you may pay . When you do, create a Sorcerer Role token attached to target creature you control. (If you control another Role on it, put that one into the graveyard. Enchanted creature gets +1/+1 and has "Whenever this creature attacks, scry 1.")

Flying
This creature enters prepared.

You have no maximum hand size.

Whenever this creature attacks, instant and sorcery spells you cast this turn cost less to cast.
Encore

Imprint — When this Equipment enters, you may exile an instant card from your hand.
Whenever equipped creature deals combat damage to a player, you may copy the exiled card. If you do, you may cast the copy without paying its mana cost.
Equip

Creatures you control can't be the targets of blue spells or abilities from blue sources.

Counter target spell unless its controller pays for each blue permanent you control.

Counter target spell. Create X Treasure tokens, where X is that spell's mana value.

Counter target spell, then assemble a Contraption. (Put the top card of your Contraption deck face up onto one of your sprockets.)

Counter target spell unless its controller pays plus an additional for each Faerie you control.

Counter target spell.
Fateful hour — If you have 5 or less life, draw a card.

Counter target spell unless its controller pays .
Cycling

Counter target spell with mana value 2.

Devoid
Counter target spell unless its controller pays . If that spell is countered this way, exile it instead of putting it into its owner's graveyard.

Magecraft — Whenever you cast or copy an instant or sorcery spell, put a book counter on this artifact.
, Remove a book counter from this artifact: Add .
, , Remove three book counters from this artifact: Draw a card.

Counter target spell unless its controller pays , where X is the greatest power among creatures you control.

Flash
Flying
When this creature enters, exile target spell with mana value 4 or less.
When this creature leaves the battlefield, the exiled card's owner may cast that card without paying its mana cost.

Counter target noncreature spell unless its controller pays .

Counter target spell. If that spell is countered this way, put it on the bottom of its owner's library instead of into that player's graveyard. Put Spell Crumple on the bottom of its owner's library.

Counter target spell.
Gotcha — Whenever an opponent says "Spell" or "Counter", you may say "Gotcha!". If you do, return Spell Counter from your graveyard to your hand.

Multikicker
Counter target spell unless its controller pays . Draw a card for each time Spell Contortion was kicked.

Use haste to attack quickly and attack relentlessly.

Haste
Whenever this creature crews a Vehicle, that Vehicle gains haste until end of turn.

Flying, lifelink
When this creature enters, choose target opponent. Secretly choose a creature or planeswalker that player controls. That player sacrifices a creature or planeswalker of their choice, then sacrifices the chosen permanent.