romance dawn booster box case OP1] x26Super Rare One Piece Card Game -

You want to play the right type of Pokmon against your opponents types to get a type advantage and do double or triple the amount of damage your Pokmon would normally do. Trainer cards (including Supporter, Stadium, and Item) are cards you can draw from your deck to gain an advantage

(Interestingly, he didnt have any cards in the Gym Leader sets

Grandma says she still has some older tins somewhere in the house

Relic is of course the most powerful, and thats why it sees the most play, but being forced to keep up a mana every turn negates much of the tempo you gain from exiling the graveyards, so I would caution you against choosing it as your default without a second thought