one piece card booster box TCG: Royal Blood (OP-10) — Game Haven The Donquixote Pirates One Piece EB-03 Heroines Edition

If you would lose unspent mana, that mana becomes colorless instead

This results in the counterspell not having a legal target when it tries to resolve because Imps Mischief has already left the stack by then

Comfortable Shuffling & Handling: Durable 60 micron sleeves offer smooth handling and easy shuffling, helping reduce friction and wear during frequent gameplay and regular use

It plays well with WBs larger sacrifice theme, but it hardly needs any support to be great

Having to exile an increasing number of cards for every time you cast it is extremely risky because you might be taking extremely important resources away from yourself