Prognostic Sphinx

Dragon spells you cast cost 2 less to cast.

This land enters tapped. As it enters, choose a color other than green. T: Add G or one mana of the chosen color.

You may have this Equipment enter as a copy of any Equipment on the battlefield.

Sacrifice this creature: Destroy target enchantment.

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

T: Add C. 1, T, Sacrifice this land: Search your library for a basic Plains, Island, or Swamp card, put it onto the battlefield tapped, then shuffle.

Rats you control have menace. 1B, T: Create a 1/1 black Rat creature token. 2BB, T, Sacrifice three Rats: Gain control of target creature.

Enchant land Whenever enchanted land is tapped for mana, its controller adds an additional G.