Kiora's Follower

The untap effect is the oldest acceleration trick in the book, but the design choice that matters here is the word "another." This Merfolk cannot untap itself, which rules out the infinite-mana loop that haunts so many designs pairing an untap ability with a mana source, and instead points the effect outward: a land for a second use, an artifact mana rock, another tapped dork, a creature you want untapped to block. It functions as a portable Voyaging Satyr that does not care what it is untapping, which is what separates it from straight ramp. The body matters to that calculus, since two mana buys both a 2/2 and a repeatable untap, but the lack of vigilance forces a real choice each turn: send it in as a beater, or hold it back so the ability is online. You rarely get both in the same turn. The genuine ceiling shows up when the untap target is itself a value engine: pair it with a permanent whose tap ability is worth repeating, and the Follower becomes a doubler rather than an accelerant. The self-exclusion clause is what keeps that from spiraling, letting the effect be generous about its targets without opening a loop. The text is short but bounded with intent: every word is chosen to make the card flexible without making it degenerate.