Banishment Decree

Tempo dressed up as removal. Tucking a permanent onto the top of its owner's library does not put it in the graveyard, does not exile it, and does not even cost the controller a card: they redraw it next turn. What the effect buys is a turn, plus the small tax of forcing an opponent to spend a draw step re-acquiring something they already had. Against most threats that price is wildly off the pace, which is exactly why bounce-to-top removal at this cost has always sat in the margins. Where it earns its keep is the corner cases broader "destroy" answers cannot touch: an indestructible permanent, a creature whose death trigger you would rather not feed, an enchantment that has grown teeth conventional destruction cannot chew through. Putting it on top, rather than into hand, also robs the opponent of the immediate replay a standard bounce spell would grant, and instant speed lets you do it at the end of their turn or in response to an ability going onto the stack. The structural cousin here is the tuck effect that legendary-heavy formats know well: the answer that resets a permanent's clock instead of breaking it. As interaction it is honest about its own ceiling: it never kills anything, it only delays, and the evaluation comes down to whether a turn of tempo plus a denied redraw is worth five mana at instant speed.