Both enable you to drop a big ol beater early, and then you can also lean into a Wildfire or similar effect
It does best in mono-green, of course, but I could see running it in a 2-color deck
Reyav, Master Smith Reyav, Master Smith isnt that different from Halvar, God of Battle, and it exists in that middle ground of unexciting and forgettable Boros commanders
Since Invasion' s creature wars usually began on turn two, you could drop a turn two bear, and then hold back Exclude for anything your opponent might drop
Hoopa-EX Hoopa-EX is not in the skeleton list because people often like to stray from using it, since it can be an easy Lysandre bait and can leave you stumped for a while, but if you'd like to add it just Tidal Storm the Energy into it as soon as you can and you shouldn't have any issue