one piece card game card types Amazon.com: Liquid Games Cards - Gold FOIL Deck of 55 Cards A Comprehensive Guide to One

Generally, decks will only play these 4mv cards if they anticipate needing a serious amount of mana

Early on, it can copy small utility creatures, while later turns let it become a flying version of the best threat on the board

You could sacrifice a creature an opponent owns if you gain control over it, but this is also a relatively rare occurrence

While it is a lovely little bolt on bonus to have on a card it does not seem to be on either enough good cards or any real power spells or even cards that work really well with it

If a card in a library has in its mana cost, X is 0 for the purpose of determining its mana value