I am not a huge fan but rather more for the design than the power level which is more than adequate for the cube
At the end of the Damage Step, if this card battled an opponent's monster: You can place this card face-up in your Spell & Trap Zone as a Continuous Spell Card, and if you do, place 1 Cubic Counter on that opponent's monster
A month ago, on Dec 22 nd , 2012, I suggested that players invest in their sets of Modern filter lands via Twitter, #mtgfinance: Lets look at the increasing prices of Filter Lands at Starcitygames.com, via www.mtgprice.com simply because they have the least price flux, as opposed to TCGplayer.com
Primordial is capable of killing three permanents, and finding you forests, but its not problematic until you flicker/reanimate/etc and isnt that every damn card in Commander
For example, the Grixis card greatly benefits blue, red, and black, and it does so through an ability specifically related to the Grixis shard in Alara