Inspiring Roar

Put a +1/+1 counter on each creature you control.

Angel of the Dawn

Flying
When this creature enters, creatures you control get +1/+1 and gain vigilance until end of turn.

Sentinel Spider

Omenspeaker

When this creature enters, scry 2. (Look at the top two cards of your library, then put any number of them on the bottom and the rest on top in any order.)

Scholar of the Ages

When this creature enters, return up to two target instant and/or sorcery cards from your graveyard to your hand.

Foundry Inspector

Artifact spells you cast cost {1} less to cast.

Training Center

This land enters tapped unless you have two or more opponents.
{T}: Add {U} or {R}.

Meteor Golem

When this creature enters, destroy target nonland permanent an opponent controls.

Universal Solvent

{7}, {T}, Sacrifice this artifact: Destroy target permanent.

Elvish Doomsayer

When this creature dies, each opponent discards a card.

War Room

{T}: Add {C}.
{3}, {T}, Pay life equal to the number of colors in your commanders' color identity: Draw a card.

Perilous Myr

When this creature dies, it deals 2 damage to any target.

Terramorphic Expanse

{T}, Sacrifice this land: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

Brinelin, the Moon Kraken

When Brinelin enters and whenever you cast a spell with mana value 6 or greater, you may return target nonland permanent to its owner's hand.
Partner (You can have two commanders if both have partner.)

Rummaging Goblin

Boarding Party

Haste
Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.)

Kangee, Sky Warden

Flying, vigilance
Whenever Kangee attacks, attacking creatures with flying get +2/+0 until end of turn.
Whenever Kangee blocks, blocking creatures with flying get +0/+2 until end of turn.

Azure Fleet Admiral

When this creature enters, you become the monarch.
This creature can't be blocked by creatures the monarch controls.

Deranged Assistant

{T}, Mill a card: Add {C}. (To mill a card, put the top card of your library into your graveyard.)

Burning Anger

Enchant creature
Enchanted creature has "{T}: This creature deals damage equal to its power to any target."