This is Dimir colors restricted to cast, costs 3 mana, and can only find a card if you have a colored legendary creature out, which the Ring tempting you helps with
In that case, Clever Impersonator enters the battlefield as a 0/0 creature, and it's put into the graveyard immediately (unless something is raising its toughness above 0)
Some other options include: Mount Doom: I dont have much against this land but I think if you keep a one lander as you do then the self damage is far from ideal Takenuma, Abandoned Mire: I think this is a good card and pretty free to play but it is very slow and not good against Leyline of the Void Agadeems Awakening: big fan of this one, a pitchable land and your life total doesnt come up very often
Language Card : english Creation Date : 24 September 2016 Pokemon Passport Name : Minior Serie : Black & White Type : Colorless Attack 1 : Cosmic Power Heals 100 health
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in any deck that has reliable treasure production, this is a straight up win condition
