Island

Staunch Shieldmate

Rasaad yn Bashir

Each creature you control assigns combat damage equal to its toughness rather than its power.
Whenever Rasaad yn Bashir attacks, if you have the initiative, double the toughness of each creature you control until end of turn.
Choose a Background (You can have a Background as a second commander.)

Lightning-Core Excavator

{5}, {T}, Sacrifice this creature: It deals 3 damage to any target.

Venture Deeper

Target player mills four cards. (Then exile this card. You may cast the creature later from exile.)

Merfolk Secretkeeper

Merfolk Secretkeeper // Venture Deeper

Lagonna-Band Trailblazer

Heroic — Whenever you cast a spell that targets this creature, put a +1/+1 counter on it.

God-Pharaoh's Faithful

Whenever you cast a blue, black, or red spell, you gain 1 life.

Aarakocra Sneak

Flying
When this creature enters, you take the initiative.

Command Tower

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

Armored Armadillo

Ward {1} (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {1}.)
{3}{W}: This creature gets +X/+0 until end of turn, where X is its toughness.

Valiant Guard

Kinjalli's Caller

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

Iron Will

Target creature gets +0/+4 until end of turn.
Cycling {2} ({2}, Discard this card: Draw a card.)

Phyrexian Walker

Solidarity

Creatures you control get +0/+5 until end of turn.

Goliath Paladin

Vigilance
When this creature enters, you take the initiative.

Counterspell

Dungeon Delver

Commander creatures you own have "Room abilities of dungeons you own trigger an additional time."

Acrobatic Leap

Target creature gets +1/+3 and gains flying until end of turn. Untap it.

Giant Ox

This creature crews Vehicles using its toughness rather than its power.

You're Ambushed on the Road

Choose one —
• Make a Retreat — Return target creature you control to its owner's hand.
• Stand and Fight — Target creature gets +1/+3 until end of turn.

Secret Door

Defender
{4}{U}: Venture into the dungeon. Activate only as a sorcery. (Enter the first room or advance to the next room.)

Dawnbringer Cleric

When this creature enters, choose one —
• Cure Wounds — You gain 2 life.
• Dispel Magic — Destroy target enchantment.
• Gentle Repose — Exile target card from a graveyard.

Steel Wall

Wall of Glare

Defender (This creature can't attack.)
This creature can block any number of creatures.

Shield Sphere

Defender
Whenever this creature blocks, put a -0/-1 counter on it.

Maned Serval

Wings of the Cosmos

Slagwurm Armor

Equipped creature gets +0/+6.
Equip {3} ({3}: Attach to target creature you control. Equip only as a sorcery. This card enters unattached and stays on the battlefield if the creature leaves.)

Trailblazer's Torch

When this Equipment enters, you take the initiative.
Whenever equipped creature becomes blocked, it deals 2 damage to each creature blocking it.
Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)

Hero's Resolve

Enchant creature
Enchanted creature gets +1/+5.

Bar the Door

Creatures you control get +0/+4 until end of turn.

Plains

Aegis Turtle

Ornithopter

Tasseled Dromedary

Eland Umbra

Enchant creature
Enchanted creature gets +0/+4.
Umbra armor (If enchanted creature would be destroyed, instead remove all damage from it and destroy this Aura.)