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[2] However, there are Special Energy cards, like Double Colorless Energy, that specifically give Colorless-type Pokmon energy

Ulalek, Fused Atrocity is a 5-color commander that doesnt care which edrazi spell you cast, big or small, as long as you can pay some extra mana to copy it

This enchantment takes the number of +1/+1 counters you may add to a card at any given time, and lets you add another +1/+1 counter on top of this

But Roiling Vortex offers other abilities that make it an attractive choice for a deck for just two mana

you can consider throwing trooper back into the ring for another round

This is probably the best bit of support the deck could have hoped for, honestly