Harabaz Druid

Tap it once and it produces one mana per Ally you control, all of a single color of your choosing, so the output scales directly off your creature count rather than from anything the body itself contributes. The 0/1 frame is the cost of admission: this is plumbing, not a threat, and the only thing it asks is that you keep counting heads. One Ally and it taps for a single mana, barely worth the slot. Four or five and it suddenly bankrolls a turn that no two-drop ramp creature has any business funding. The fragility is the balancing weight. It dies to anything, and its output collapses the moment a sweeper resets the board, so the mana it promises exists only as long as that wide team survives. That conditionality is what keeps a creature capable of generating five or six off a single tap from being broken: the ceiling is high, but it is rented from a board state that is trivial to dismantle. Where most tribal scaling cards bolt a single fixed color onto the count (Priest of Titania makes green, Elvish Archdruid makes green), this one floats: the X mana can be any one color, which turns a board built for incremental Ally value into a one-shot burst of whatever your spells happen to demand. The count is the same engine the tribe was already running; the any-color clause is what makes the payoff worth building toward.