Xenograft

Tribal payoffs ask a deck to commit to a single creature type, and most of them quietly punish the off-theme bodies you have to run alongside: the mana dork that isn't an Elf, the utility flier that isn't a Goblin. This rewrites that contract from the top. Pick a type once, and every creature you control answers to it: the dorks, the changelings you didn't need, the random fliers, even tokens that arrive later. It turns lords from cards that buff a curated subset into cards that buff your whole board, and it does the same for tribal sacrifice fodder and any "creatures of the chosen type" trigger you can name. The structural trick is that it touches type, not power or toughness or keywords, so it layers under any number of those effects without collision. The cost is that it adds no body itself and contributes nothing until you have creatures to convert: five mana that only pays off in a shell already pointed at one tribe. That narrowness is also why it never traveled much past the decks built specifically to abuse it. The companion piece is Conspiracy, which does identical work from black at the same value; choosing between them is mostly a question of which color your tribal core already lives in. Both exist to solve the same problem: a tribe is only as strong as the percentage of your creatures that actually belong to it.