Play things like Seize the Day and seize all their goodstuffs as well
Magic: The Gathering FINAL FANTASY Commander: Deck Set: Collector's Edition Set of four Commander: Collector's Edition decks for Magic: The GatheringFINAL FANTASY - "Counter Blitz", "Limit Break", ''Revival Trance'' and ''Scions & Spellcraft'' for cheaper price.
Fischer Standard Not Legal Alchemy Not Legal Pioneer Not Legal Historic Not Legal Modern Legal Brawl Not Legal Legacy Legal Comp
Pair Karlach with the Guild Artisan background and your combat steps become even more absurd
Also, if youre playing Eidolon, you cannot play Experimental Frenzy or Mutavault two cards which I believe help with the matchups you struggle with (midrange decks with a lot of removal such as Black-Red Midrange and Niv-to-Light)
From the Base Set through to the EX Power Keepers expansion, the TCG featured six basic Energy cards: Grass Energy, Fire Energy, Water Energy, Lightning Energy, Psychic Energy, and Fighting Energy