Play the usual TeraZard line, evolve to put 2 Fire on Active and 1 on a backup Mander, take some knockouts, then before the first TeraZard gets KO'd (or if you have other ways to keep 4 energy in play, which Zard/Pidgeot should be able to do), evolve to a MegaZard and take out any opposing megas by dealing 380 damage
As you'd expect, the face commander is a better fit for the deck as a whole, but The Reaper King will be very powerful when you play him, and with just a few tweaks to swap out cards that put counters on your own stuff, he could easily lead the deck
We want to end things quickly You can see that with this god I always try to drive the game quickly, to indirectly invite the opponent to sweep the creatures off the board with a Board Wipe, when constant pressure is built up
If youre completely new to the Pokmon Trading Card Game, the best way to learn is probably by picking up a pre-made deck pack