pokemon card full art trainer Miriam – withlovebysleepy Evolves from null Rules Each player shuffles their hand and puts it on the bottom of their deck All Trainer Gallery Pokémon Cards

You can also do fair things like card draw or removal spell recursion

I put basically no stock in the pump ability, though I guess some prowess-heavy Veyran, Voice of Duality EDH decks or red aggro decks in Constructed might choose that mode on occasion

The Death Toll Commander deck gives you a strong black and green mill-based deck to pilot, letting you return cards from your graveyard back to play, though you can only do it once since that permanent comes back with a finality counter

With Universes Beyond products coming through Standard you can expect they'll come through Arena via Through the Omenpaths or not

I do have some thoughts that might help you, though, but some of these are playgroup dependent (or meta-dependent): From MH3, things like White Orchid Phantom, Estrid's Invocation, Lion Umbra, Glyph Elemental, Indebted Spirit, Triton Wavebreaker, and Monumental Henge all might prove useful