Carrier Thrall

A 2/1 for two that refuses to trade cleanly: kill it in combat or with a removal spell and the controller keeps a body and a stored point of mana, because the death trigger leaves behind an Eldrazi Scion carrying its own sacrifice-for-colorless ability. That single clause changes how the card reads next to a vanilla aggressive two-drop. The Scion is a sacrifice-outlet feed, a one-shot ramp source, and a chump blocker rolled into a token that arrives precisely when the original creature is gone, so the value is back-loaded onto its own death rather than spent up front. This sits with the black creatures built to convert their removal into resources, where the opponent's clean answer still costs them tempo because something useful lands on the other side. The mana the Scion produces is colorless and comes one point at a time, an activated ability the controller chooses to cash in, which keeps the engine restrained: it fuels Eldrazi and generic costs without pretending to fix a color, and it asks you to have a sacrifice outlet or an Eldrazi payoff ready before the token is worth more than a single point of mana. As a fair creature it is unremarkable; as a piece of an aristocrats or colorless-ramp shell, it is a two-for-one wrapped around a single death, the Vampire feeding the Scion that outlives it.