This card is not a Black Lotus or a Darkstell Collossus, but it can also be very dangerous in play. For example in a green-red-black-deck if you have Deathbringer Thoctar on your side. Much more force has it with arcbound-creatures . Just one example is Arcbound Overseer . Whee. Every turn, all your arcbounds get 2 +1/+1-counters and if an arcbound creature dies, another of your arcbounds gets its +1/+1-counters multiplicated with 2!!!
What did I say?
It's not a Black Lotus or a Darksteel Collossus, but it's a Doubling Season and that's enough.