price chart for pokemon cards of over time Pokemon Card Market Index Tracker Pokemon Historical Chart : r/PokemonTCG

Mutate turns two or more creature cards into one permanent, merging their abilities, and usually granting a special benefit when you do so - but the specific wording of the rules generates many edge cases you need to be aware of

In the rare case where more than one card is exiled with Ugin's Labyrinth's imprint ability (likely because the triggered ability was copied or the ability triggered a second time), its last ability will return all such cards to their owners' hands

4/3 for two is rather unprecedented right now, and the discard is not a cost but an effect

Maybe they were of the same creature type, or showed a similar creative element, or just played well together

Just remember to pack a Scavenger Grounds when youre Milling, so you dont accidentally enable the necromancers