Viridescent Wisps

The color-changing clause is the load-bearing half, even though the +1/+0 reads like the point. Painting a target creature green for one mana looks like flavor filler until you remember what actually cares about creature color: color-matters payoffs that count green permanents, protection and removal that key off color, and the cantrip itself, which guarantees the spell never feels like a dead draw. That last line reframes the whole card from combat trick to enabler. A pump spell that replaces itself costs nothing in card economy, so the +1/+0 stops being the reason you cast it and becomes a small bonus stapled to a green-painting cantrip. The design lineage here is a small family of one-mana instants that quietly recolor a permanent and refund the card, built for archetypes that punish or reward a specific color rather than for the creature getting nudged. The instant-speed window matters too: you can recolor a blocker after attackers are declared, or flip something green in response to a color-conditional removal spell, then draw into your next play. Read straight, this is a marginal effect; read as a way to make any creature count as green at instant speed while refunding itself, it is a precise little tool for decks that have a reason to care what color something is.