Crystacean

A wall that arrives on the opponent's turn. The 1/6 body is pure defense: it blocks the ground indefinitely, dies to almost nothing in combat, and threatens nobody. What flash buys here is not surprise value but tempo neutrality. Where most blockers cost you a whole turn to deploy, this one holds up your mana for a counterspell or a removal effect and then, if the coast stays clear, plants itself in front of an attacker at the last possible moment. The instant-speed casting window turns a passive card into a reactive one: you commit to the wall only after your opponent has committed to the attack, and until then the same untapped lands can bluff interaction. It is a small, honest piece of design about deferring a decision. The toughness does the blocking; the flash decides when you have to spend the card at all, and the two-mana premium a wall of this size would normally not warrant is paid entirely for the right to wait.