I'm not sure what else you'd do with it
Any existing effects or counters that raise, lower, or switch a creature's power and/or toughness continue to apply to the creature's new base power or toughness
When I need to let ideas simmer, or just take a step back, I switch off to the art table where Im working on a private commission that has been on my plate since last fall
Making matters worse, to support backup commander Zaxara, the Exemplary, the deck also has some random X-spells that are not especially playable as well as creatures like Hungering Hydra and Vastwood Hydra, which don't do much to support the primary mutate theme (other than possibly add a creature with some +1/+1 counters to the battlefield to mutate on)
Reverse Valley BREAKpoint #110 Set Number Supertype Subtypes Rarity Artist HP Regulation Mark Types Retreat Cost Rules Choose which way this card faces before you play it