Lapse of Certainty

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

Boreal Druid

Llanowar Elves

Avacyn's Pilgrim

Drannith Magistrate

Your opponents can't cast spells from anywhere other than their hands.

Thalia, Guardian of Thraben

First strike
Noncreature spells cost {1} more to cast.

Ethersworn Canonist

Each player who has cast a nonartifact spell this turn can't cast additional nonartifact spells.

Rule of Law

Each player can't cast more than one spell each turn.

Elves of Deep Shadow

{T}: Add {B}. Elves of Deep Shadow deals 1 damage to you.

Red Elemental Blast

Choose one —
• Counter target blue spell.
• Destroy target blue permanent.

Deafening Silence

Each player can't cast more than one noncreature spell each turn.

Reyhan, Last of the Abzan

Reyhan, Last of the Abzan enters with three +1/+1 counters on it.
Whenever a creature you control dies or is put into the command zone, if it had one or more +1/+1 counters on it, you may put that many +1/+1 counters on target creature.
Partner (You can have two commanders if both have partner.)

Pyroblast

Choose one —
• Counter target spell if it's blue.
• Destroy target permanent if it's blue.

Veil of Summer

Draw a card if an opponent has cast a blue or black spell this turn. Spells you control can't be countered this turn. You and permanents you control gain hexproof from blue and from black until end of turn. (You and they can't be the targets of blue or black spells or abilities your opponents control.)

Eidolon of Rhetoric

Collector Ouphe

Activated abilities of artifacts can't be activated.

Vryn Wingmare

Flying
Noncreature spells cost {1} more to cast.

Birds of Paradise

Vexing Shusher

This spell can't be countered.
{R/G}: Target spell can't be countered.

Bruse Tarl, Boorish Herder

Whenever Bruse Tarl, Boorish Herder enters or attacks, target creature you control gains double strike and lifelink until end of turn.
Partner (You can have two commanders if both have partner.)