Izzet Signet

Void Mirror

Whenever a player casts a spell, if no colored mana was spent to cast it, counter that spell.

Stone Rain

Ceremonious Rejection

Azorius Signet

Dimir Signet

Selesnya Signet

Rakdos Signet

Child of Alara

Trample
When Child of Alara dies, destroy all nonland permanents. They can't be regenerated.

Gruul Signet

Swamp

Boros Signet

Voidslime

Counter target spell, activated ability, or triggered ability. (Mana abilities can't be targeted.)

Arcane Signet

{T}: Add one mana of any color in your commander's color identity.

Golgari Signet

Sol Ring

Island

Leyline of the Void

If Leyline of the Void is in your opening hand, you may begin the game with it on the battlefield.
If a card would be put into an opponent's graveyard from anywhere, exile it instead.

Simic Signet

Orzhov Signet

Mountain

Seismic Spike

Leyline of Sanctity

If Leyline of Sanctity is in your opening hand, you may begin the game with it on the battlefield.
You have hexproof. (You can't be the target of spells or abilities your opponents control.)

Plains

Forest

Command Tower

Leyline of the Guildpact

If Leyline of the Guildpact is in your opening hand, you may begin the game with it on the battlefield.
Each nonland permanent you control is all colors.
Lands you control are every basic land type in addition to their other types.

Have

Getting

Don't Have

no no eldrazi