Oasis Ritualist

Exert is usually a combat keyword: push extra damage, then sit out the untap. Here it gets bolted onto a mana dork instead, and the swap of axes is the whole idea. The first mode is the standard four-drop fixer, one mana of any color on tap. The second turns the body into a battery you can drain harder: spend the untap to get two mana of one color, then accept that the creature does nothing on your next turn. The cost is paid in ramp tempo rather than defensive posture, and the 2/4 frame is sized for exactly that recovery window. The toughness is doing the quiet work; a fixer left tapped down through an extra turn needs to survive that exposure, and four toughness shrugs off the incidental damage that would otherwise punish a dork stuck on its side. What it adds over a flat accelerant is a recurring read on next turn's mana: take the steady single any-color drip, or front-load a one-shot surge of two mana in a single color to land something a turn early. That choice rewards knowing precisely how much, and what kind, of mana the following turn actually demands. It is a snake druid for decks that want flexible color output and can budget the occasional skipped untap.