Enduring Bondwarden

Backup normally hangs its whole payoff on the enters trigger: the counter and the granted keyword land once, and once the creature it invested in trades away, the buff is gone with the body. This one asks a question that mechanic rarely poses: where does the counter go when the courier dies? The dies trigger relocates whatever counters sit on this creature onto another creature you control, which turns the backup decision into a fork. Send the counter elsewhere and you get the classic line, but this body dies empty. Keep the counter home and it becomes a 1/2 holding a counter it can hand off later, so its eventual death (to removal, a chump block, a sacrifice outlet) passes the buff along rather than spending it. The card is at its sharpest when it accumulates: pile counters onto it through proliferate or additional counter effects, and its death becomes a lump-sum transfer of everything it hoarded. The tension is that the 0/1 shell does nothing offensively and wants to end up in the graveyard to cash out, which inverts the usual relationship a support creature has with survival. Read as a one-drop that wants a body, it is unremarkable; read as a counter courier whose death is the point, it becomes a different piece entirely: a way to keep a +1/+1 investment liquid across the whole game instead of committing it to a single vulnerable target.