pokemon current booster pack TCG 3 Packs, 30 Cards Total, Value with 3 Blister Packs, 100% Authentic, Random Chance at Rares & Holofoils : Toys & Games and dance. Pokémon Trading Card Game: Scarlet

Merfolk Sovereign Merfolk Sovereign is a nice lord for your merfolk typal decks

Simic Sleeves are made from premium non-PVC film, so they are archival safe and resistant to wear and tear

So this way is more consistent than Genetic Apex

Going forward with the Scapeshift Deck getting more and more popular, I can see adding even a third copy of Legions End to the Sideboard or even a copy Maindeck as it clears out all Zombie Tokens while being very flexible and switch it for the Temple of Silence as it would be the first card I would cut from the Maindeck

Its hard to beat the value and mana this card produces

I think sideboards are essential in any game mode, Arena or otherwise, and getting to play cards as they were designed is common sense to me