Pixie Illusionist

The tap ability marks this as a fixing engine wearing a Faerie's clothes. A one-mana flyer that rewrites the basic land type of any land you control, at instant speed, once per turn, is a manabase adjustment that lives on the battlefield rather than in your list: you keep the creature and re-point it every turn as your needs change. Because it changes the land's type rather than filtering mana through a payment, it lets an otherwise off-color source produce whatever color you need this turn, which is exactly what a blue deck angling for a splash wants without warping its mana. The flying body means the creature isn't dead weight when the fixing job is done. The kicker is the honest toll for scaling it past a chump-blocker: pay the green surcharge and it arrives as a 3/3 flyer with two counters instead of a 1/1, pulling it toward a Simic build that could spare the extra mana and wanted a body worth protecting. The two payments answer two different questions, which is the cleaner part of the design. The base cost buys the fixing organ; the kicker buys a clock. Most one-drops with a tap ability want the creature held back and safe; this one gives you a reason to push it into the red zone once the color-fixing is no longer needed, a sharper split of roles than the small printed body suggests.