Combined with The One Ring's undeniable potential in the Commander format, and this may at least explain, if not justify, the $100 price tag on TCGplayer.com for The One Ring's promo version
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In Zendikar Rising, we return to the mana-filled plane to deal with the mysterious and dangerous creatures that live there now after the aftermath of Eldrazi's defeat
You can compare it to Wrath of God , Damnation or Day of Judgment but using the characteristics of red in the color pie plus it deals with planeswalkers too
This is flexible, but giving your opponent mana means that you can't really cast it early -- otherwise the downside can be monumental -- so it's really not that flexible
: Gain control of target creature with power less than or equal to this creature's power for as long as this creature remains tapped and that creature's power remains less than or equal to this creature's power