Lossarnach Captain (Showcase Scrolls) [LTC - 418] Red Face-down creatures you control have

Face-down creatures you control have "2UB: Turn this creature face up

Whenever you cast an artifact spell with mana value 6 or greater

Creature Type or Sub Type: Legendary Creature — Elemental Cat

Whenever Hexgold Slith attacks

The Oltec go further

Lossarnach Captain (Showcase Scrolls) [LTC - 418] Red Face-down creatures you control haveRarity: R #: 418 Creature Type or Sub Type: Creature Human Soldier P: 3 T: 1 Rules Text Contains: First strike Whenever Lossarnach Captain or another Human enters the battlefield under your control, tap target creature an opponent controls. At the beginning of your upkeep, create a 1 1 white Human Soldier creature token.