Undergrowth — When Kraul Foragers enters the battlefield, you gain 1 life for each creature card in your graveyard.

Flying, haste
Whenever an opponent casts their second spell each turn, draw a card.
Partner (You can have two commanders if both have partner.)

Leapfrog has flying as long as you've cast an instant or sorcery spell this turn.

At the beginning of combat on your turn, if you control three or more creatures, Leonin Vanguard gets +1/+1 until end of turn and you gain 1 life.

When Leonin of the Lost Pride dies, exile target card from an opponent's graveyard.

At the beginning of each player's end step, that player may draw a card if a player other than you lost life this turn.
Partner (You can have two commanders if both have partner.)

Equipped creature gets +1/+1 for each charge counter on Mace of the Valiant and has vigilance.
Whenever a creature enters the battlefield under your control, put a charge counter on Mace of the Valiant.
Equip

Enchant creature
Enchanted creature gets +1/+1 and is goaded. (It attacks each combat if able and attacks a player other than you if able.)
Whenever enchanted creature attacks, each other creature that's attacking one of your opponents gets +1/+1 until end of turn.

Target opponent reveals their hand. You choose a nonland card from that player's graveyard or hand and exile it.

First strike
Landfall — Whenever a land enters the battlefield under your control, Ondu Greathorn gets +2/+2 until end of turn.

This spell costs less to cast for each land card in your graveyard.
Flying, haste

When Palace Sentinels enters the battlefield, you become the monarch.

Destroy target creature with flying.

Equipped creature gets +1/+0.
Whenever equipped creature deals combat damage to a player, create a Treasure token. (It's an artifact with ", Sacrifice this artifact: Add one mana of any color.")
Equip (: Attach to target creature you control. Equip only as a sorcery.)

Trample
Cycling (, Discard this card: Draw a card.)

Destroy target land. Scry 2.

Destroy target creature or planeswalker.
Awaken 4— (If you cast this spell for , also put four +1/+1 counters on target land you control and it becomes a 0/0 Elemental creature with haste. It's still a land.)

, Sacrifice a creature: Create two Treasure tokens. (They're artifacts with ", Sacrifice this artifact: Add one mana of any color.")
Sacrifice three Treasures: Draw a card.

When Sand Strangler enters the battlefield, if you control a Desert or there is a Desert card in your graveyard, you may have Sand Strangler deal 3 damage to target creature.

Mutate (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.)
Trample
Whenever this creature mutates, destroy target noncreature permanent. Its controller creates a 3/3 green Beast creature token.