Portal of Sanctuary

A repeatable bounce that only ever targets your own board, and specifically drags along every Aura attached to the returned creature. That last clause is the tell: this is a rescue button and a recursion outlet, not a tempo weapon. The "activate only during your turn" clause is a narrower leash than it looks, because it still permits instant-speed use on your own turn: you can hold up the ability, wait for an opponent to point a removal spell at your enchanted creature, and respond by returning both the creature and its Aura to hand rather than watching the Aura fall off into the graveyard. What it cannot do is act on their turn, so it never blanks an attacker mid-combat on defense or dodges a trick during their swing. The recurring cost is the honest part of the deal: unlike a one-shot like Unsummon, you pay a permanent's worth of setup plus a mana each time, but you get to do it every turn you choose to. That cadence is what defines its role. It re-triggers enters-the-battlefield abilities on demand, it launders a threatened creature out of danger at the price of recasting it, and it treats a returned Aura as a resource to replay rather than a loss to absorb. It is blue's take on a slow, deliberate flicker engine, built for the creatures and enchantment-matters shells that want to be picked up and put back down.