Drake Familiar

That enters-the-battlefield clause is a tax that doubles as an engine input. A 2/1 flier for two looks unremarkable, but the Drake never lands quietly: it forces you to return an enchantment to hand or sacrifice it on the spot. With no enchantment on the battlefield to return, the clause is fatal: the creature sees the battlefield, fails its condition, and dies before it can attack. Built into a shell that wants enchantments back in hand, the same clause inverts. Auras and enchantments with their own enter-the-battlefield effects get recast for value, and the same enchantment can bounce on the loop every time you replay the Drake. It is a design that only pays off in pairs: half an engine waiting for the other half. Returning a permanent to hand is normally a setback, so the card is written to find the player for whom it is not, the one running cheap recurring triggers that turn the bounce into a second cast rather than a toll. Cast it cold and it never sticks. Cast it inside the enchantment loop it was built around and the sacrifice line stops being a downside; it becomes the reason to run the card at all.