Molting Snakeskin | Enchantment | Aura | Enchant creature
Enchanted creature gets +2/+0 and has "{2}{B}: Regenerate this creature." | YW Tang
Retribution of the Ancients | Enchantment | | {B}, Remove X +1/+1 counters from among creatures you control: Target creature gets -X/-X until end of turn. | Svetlin Velinov
Hardened Scales | Enchantment | | If one or more +1/+1 counters would be put on a creature you control, that many plus one +1/+1 counters are put on it instead. | Mark Winters