Optimus Prime, Hero Flip has to die to convert, having some sources to sac him can be helpful and also give lots of value
The answer is sort of three: artifacts, blue, and black
Red Elemental Blast a very efficient way to win counterwars or kill a fast Serendib Efreet, while Blue Elemental Blast is used against very aggressive burn decks, and is especially helpful against Blood Moon
Pokemon Card Overview: Pokemon Card Strategy: So as far as strategy goes, since this is a stage 1 Pokemon card that has a stage 2 evolution you'll definitely want to evolve Duosion into Reuniclus has soon as possible, there are actually two different versions of Reuniclus in this set and I've reviewed them both previously
A lot of this card will come down to how useful the Locker Room part is
Theres already a dearth of removal in casual Commander, and Warp blanks all sorcery speed removal