Fellwar Stone

{T}: Add one mana of any color that a land an opponent controls could produce.

Hedron Crab

Landfall — Whenever a land you control enters, target player mills three cards.

Whispering Madness

Each player discards their hand, then draws cards equal to the greatest number of cards a player discarded this way.
Cipher (Then you may exile this spell card encoded on a creature you control. Whenever that creature deals combat damage to a player, its controller may cast a copy of the encoded card without paying its mana cost.)

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