This is a color combination of recklessness, speed, spectacle, violence, and relentlessness
They also result in a delayed trigger that does the killing, which you can avoid with stifles or end-the-turn cards like Sundial of the Infinite
You see, you can discard a card with a mana value of X to counter a target spell with that same mana value
Even stall decks that make use of Druddigons Rough Skin ability and the Rocky Helmet Tool Card also dont fair well with Cyrus, since that strategy requires those Pokmon to take some hits to deal damage
Imagine a Flames of the Firebrand or a Forked Bolt every turn, and better if you have bigger equipment
Like Oricorio, Pokmon with "Fighting-" moves can be rather efficient against Pokmon ex, but subpar against non-ex Pokmon