Jade Bearer

The cheapest Merfolk payoff that leaves something behind. The distinction worth naming is where the buff lives: instead of lending a static bonus tied to its own survival, this parks a permanent +1/+1 counter on another Merfolk. A lord like Merrow Reejerey hands out a boost that evaporates the moment it dies; the counter this creature drops stays put even after the one-power body that placed it is gone. The buff survives removal aimed at the buffer, not removal aimed at its target: kill the creature carrying the counter and the growth goes with it. What that permanence buys is independence from the source, which is why a fragile 1/1 earns a slot in a tribe already flush with stronger lords. The constraint that pays for the effect sits in the trigger itself: it resolves on enter and demands another Merfolk already in play at that moment. Drop it onto an empty board and the ability whiffs, since it cannot hold the counter in reserve for a creature cast later. So the card wants to arrive second, after a one-drop is down, upgrading a developing attacker into a real threat the turn it lands. Understood that way, it is a follow-up rather than an opener: a way to squeeze reach out of a board already forming. The only demand it places on a deck is that the rest of the roster share the type, and it repays that single commitment with the most durable growth a one-mana green creature can hand off.