Note that you need this number of cards in addition to how many the game says you need to have leftover
For example, a control deck might have a game-winning combo to finish off a game quickly
For four mana, two of which have to be Blue or Green, you get to mill two cards and then you can return a nonland card of an opponents choice from your graveyard to your hand
The card incentivizes players to run as many copies of Cid as they can, so anyone who wants to build a Cid-centric deck needs dozens of Cids
This planeswalker can exile itself, too, which can protect it from a threatening board of attackers
Thornmantle Striker At 5 mana Thornmantle is costly, but its a two-for-one removal spell, and since you are running Elfball, mana is generally not an issue