Bloodmark Mentor

Red creatures you control have first strike.

Beetleback Chief

When Beetleback Chief enters the battlefield, create two 1/1 red Goblin creature tokens.

{1}{R}, Sacrifice a Goblin: Arms Dealer deals 4 damage to target creature.

Whenever Battle-Scarred Goblin becomes blocked, it deals 1 damage to each creature blocking it.

{T}: Create X 1/1 red Goblin creature tokens, where X is the number of Goblins you control.