It is much more evolved than the card game in the Witcher 3 and it is somewhat similar to Magic The Gathering
Note that many of these are pretty pricey on the secondary market, but I'd rather spend that cash on a weird P3K Commander than on your typical Cyclonic Rift or the Ancient Dragon Cycle or other cards that will retain its rare value, and some were reprinted and have cheaper versions now
Similarly, its second ability triggers even if the creature spell with mutate was cast for a cost other than its mutate cost
In Wilds of Eldraine, Rick will be getting reprinted with a Universes Within variant
If you choose not to cast the card, it remains in exile
Land Tax Start with the best white cards in MTG that provide reliable removal, protection, and value, then layer in synergy pieces that support your strategy