Assassin's Trophy Assassin's Trophy is some great instant-speed permanent removal that sees play in just about every BGx Commander deck
You can pay for this with any type of Energy
Seven mana isnt something you can just put in your average deck and expect to happen though, but if your deck is slow or has some acceleration, Coliseum Behemoth should be fine to play
SR Super Rare Scareclaw Twinsaw X TRAP Tribute 1 "Scareclaw" monster, then target 2 cards your opponent controls
You'd think The Pokemon Company's legal team is preparing to get involved, especially with how ban-happy it is when striking down Pokemon fan projects, although there's currently no word on whether it or Nintendo plans to put a stop to the whole thing
Its worth noting that your big Eldrazi have annihilator X, so once they start attacking, your opponents forces will crumple, so that works for interaction and removal as well