Kruin Striker

Whenever another creature enters the battlefield under your control, Kruin Striker gets +1/+0 and gains trample until end of turn.

Gather the Townsfolk

Create two 1/1 white Human creature tokens.
Fateful hour — If you have 5 or less life, create five of those tokens instead.

When Beskir Shieldmate dies, create a 1/1 white Human Warrior creature token.

Battalion — Whenever Boros Elite and at least two other creatures attack, Boros Elite gets +2/+2 until end of turn.

Lightning Bolt deals 3 damage to any target.

As an additional cost to cast this spell, discard a card.
Draw two cards and create a 1/1 white Human Soldier creature token.

Create two 1/1 white Human Soldier creature tokens. Humans you control gain haste until end of turn.

Menace (This creature can't be blocked except by two or more creatures.)
When Rohirrim Lancer dies, the Ring tempts you.

Creatures you control gain protection from non-Human creatures until end of turn.

Vigilance
When Codespell Cleric enters the battlefield, if it was the second spell you cast this turn, put a +1/+1 counter on target creature.

Exile the top two cards of your library. Until the end of your next turn, you may play those cards.

When Burning-Tree Emissary enters the battlefield, add {R}{G}.

When Thraben Inspector enters the battlefield, investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this artifact: Draw a card.")