This doesnt have to be a combo more often than not its just a direction if the cards in your deck all point in the same direction that is to say all work to achieve the same goal, whether thats stockpile and use energy, mill them, give you a bunch of tokens and swarm or Craterhoof them or any number of ways to win, the deck is more effective than a jack of all trades, master of none approach and that was a seriously long run-on sentence, I apologize
Finally, will there be a Pokemon TCG Live Nintendo Switch version
Big, flashy, expensive effects like this are usually more trouble than they're worth - but convoke makes this enchantment much more likely to see play and be a problem
PSA has not always maintained the same grading standards
The game rules consider that creature to have been regenerated instead of dying
WotC correctly determined that annihilator is about as fun as a stubbed toe, so Ulamog 2.0 dropped the mechanic altogether in favor of exiling 20 cards on attacks