Some of them have special abilities noted in the card text, and all of them have a power and toughness rating that shows how much damage they can do and how much they can take per turn
For a mere three mana, Svyelun is a 3/4 merfolk god that has indestructible as long as its owner controls two or more other merfolk
See whether the chosen store offers anything other than Pokmon cards, too
Erebos, Bleak-Hearted Both versions of Erebos are quite disappointing, I think
Marcy: This Overlord made a lot of appearances in the Self-Mill Reanimator combo decks, and it is easy to see why: a 2 mana mill 4, return something (maybe), that becomes a 5/5
Since Thanos doesnt destroy himself, you can go with either odd or even creatures, but odd seems to have some slightly better payoffs