Ranger-Captain of Eos Ranger-Captain of Eos looks excellent to me
Here are other deck archetypes that generally perform better in the Arena best-of-one ranked matches: Mono Red aggro or burn Mono White weenies aggro Mill decks Combo decks Play Best-of-Three Matches if Playing Long Games with Sideboard Options If long, calculative games are your thing, then best-of-three matches might be more suitable, as a good sideboard can counter different decks, giving you flexibility and less reliant on the matching algorithm
What makes this Sliver so good is that it lets you cast all your Sliver spells at instant speed, letting you cast them at any time
I could understand if, say, the monster holograms the characters' Duel Discs project had a physical presence, thereby making their attacks actually hurt, but that's not happening for a good four anime spin-offs or so
[1] This Pendulum Summoned card gains the following effects
He isnt a flashy card, but he gets the job done, and sometimes a deck needs just that