Swan Song

Counter target enchantment, instant, or sorcery spell. Its controller creates a 2/2 blue Bird creature token with flying.

Glacial Fortress

Glacial Fortress enters tapped unless you control a Plains or an Island.
{T}: Add {W} or {U}.

Ornithopter

Altar of the Brood

Whenever another permanent you control enters, each opponent mills a card.

Snow-Covered Plains

Nettle Drone

Devoid (This card has no color.)
{T}: Nettle Drone deals 1 damage to each opponent.
Whenever you cast a colorless spell, untap Nettle Drone.

Hallowed Fountain

({T}: Add {W} or {U}.)
As Hallowed Fountain enters, you may pay 2 life. If you don't, it enters tapped.

Snow-Covered Island

Rest in Peace

When Rest in Peace enters, exile all graveyards.
If a card or token would be put into a graveyard from anywhere, exile it instead.

Don't Have

Solve the Equation

Search your library for an instant or sorcery card, reveal it, put it into your hand, then shuffle.

Midnight Guard

Whenever another creature enters, untap Midnight Guard.

Flusterstorm

Counter target instant or sorcery spell unless its controller pays {1}.
Storm (When you cast this spell, copy it for each spell cast before it this turn. You may choose new targets for the copies.)

Retraction Helix

Until end of turn, target creature gains "{T}: Return target nonland permanent to its owner's hand."

Counterspell

Mirran Spy

Flying
Whenever you cast an artifact spell, you may untap target creature.

Serum Visions

Generous Gift

Destroy target permanent. Its controller creates a 3/3 green Elephant creature token.

Memnite

Dovin's Veto

This spell can't be countered.
Counter target noncreature spell.

Banishing Knack

Fabricate

Search your library for an artifact card, reveal it, put it into your hand, then shuffle.