Card Name Mana Cost Type Enchantment Rarity Uncommon rules Text At the beginning of your upkeep, each player discards a card
Have him sacrifice all his artifacts to his Arcbound Ravager, and forget to do damage with Disciple of the Vault
Each card in the Planar Deck adds a rule for every player in the game, representing the plane they are doing battle on
Instead of being printed to demand, only a limited number of each set is now ever made, so you must get your order in fast if you want to pick them up.
A one-mana play that really shines when mutated upon would be an upgrade, but more than anything Sea-Dasher Octopus needs a two-mana counterspell that really punishes opponents throughout the game
With that in mind, this is a good place to introduce the idea of converted mana cost or CMC