Card Codex

Undersimplify

1U · Instant

Choose target spell. If it's a creature spell, it perpetually gets -2/-0. Counter that spell unless its controller pays {2}.

Name	Mana	Type	Text
When	2U	Instant	Counter target creature spell.
Dissolve	1UU	Instant	Counter target spell. Scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)
Memory Drain	2UU	Instant	Counter target spell. Scry 2.
Protect the Negotiators	1U	Instant	Kicker {W} (You may pay an additional {W} as you cast this spell.) If this spell was kicked, create a 1/1 white Soldier creature token. Counter target spell unless its controller pays {1} for each creature you control.
Lifeforce	GG	Enchantment	{G}{G}: Counter target black spell.
Busted!	1U	Instant	Counter target spell unless its controller pays {X}, where X is the number of words in the name with the most words among permanents you control.
Dash Hopes	BB	Instant	When you cast this spell, any player may pay 5 life. If a player does, counter Dash Hopes. Counter target spell.
Martyr of Frost	U	Creature — Human Wizard	{2}, Reveal X blue cards from your hand, Sacrifice Martyr of Frost: Counter target spell unless its controller pays {X}. 1/1
Guttural Response	R/G	Instant	Counter target blue instant spell.
Nix	U	Instant	Counter target spell if no mana was spent to cast it.