Aegis Automaton

A 0/3 body for two mana with an activated ability that does nothing to the opponent's board: the entire payload points sideways, at your own creatures, not theirs. That inversion is the design. The toughness makes it a durable early blocker, cheap enough to sit in front of the aggressive starts white tends to race against, while the activation is a slow-turn engine for re-triggering enter-the-battlefield effects: bounce your own value creature, recast it, repeat. The cost structure tells you what it expects. Five mana to bounce one of your own creatures means this is not a tempo play; it is something you do with mana left over, on a turn when nothing better presents itself. The body buys those turns, and the loop converts them into repeated triggers or card advantage. It is a colorless creature with a white-pip activation, so the bounce engine lives wherever white mana does, but a mana value of two against a five-mana ability means the construct asks an artifact shell or a flicker-adjacent value deck to justify the slot rather than slotting cleanly onto a curve. Built to protect and to recycle, its ceiling is entirely a function of what you point the ability at: a bare creature loops itself for nothing, while a stacked enter-the-battlefield trigger turns each clunky activation into a repeatable effect engine.