Ambush Gigapede

Six power for six mana on a two-toughness body is a bad rate to attack with and a fine rate to ambush with, which is the whole trade this design makes. The flash is what pays for the fragility: cast at the end of an opponent's turn or in response to an attack, the -2/-2 clears a blocker or shrinks an attacker to death, and the 6/2 that would fold to any spot removal on your own turn can instead threaten a large swing. The math is deliberately lopsided. Two toughness dies to almost everything, so the card is priced as if it will die; the reward is that it gets to spend its enter-the-battlefield trigger the moment it lands, on your terms rather than the opponent's. It functions less like a creature you deploy and more like a removal spell that leaves a body, a Insect-shaped combat trick you can also hardcast when you simply need a big threat at instant speed. The -2/-2 targets only what an opponent controls, so it is pure interaction rather than a sacrifice enabler for your own board. Everything about the numbers points the same direction: this is a card built to enter, kill, and swing inside a single window, not to survive the game.