raichu pokemon card gx TCG Pokémon Hit Points210 HP Form Pokemon Trading Card Game Shining

You just have to declare the attack

Portcullis Vine

Creature - Human Warrior Magus of the Balance , , Sacrifice this creature: Each player chooses a number of lands they control equal to the number of lands controlled by the player who controls the fewest, then sacrifices the rest

Also, if you and/or the person you are playing with are new to the game, you dont need to actually use all of the cards or attacks with the longer or more complex descriptions

If its a nonland card, the creature thats exploring gets a +1/+1 counter, and then you choose whether the revealed card stays on top of your library or goes to the graveyard

This only applies to artifacts, obviously