pokemon card porygon2 (104/147) [Sun & Moon: Burning Shadows] Once during your turn (before your attack) Vintage Rare - Porygon2 EX

Packbeast is only good when you wind up with a focused deck, while the removal spells (like the various Exhales) are good no matter what your deck looks like

Arena only contains cards from the past few years of MTG, just FYI

Even outside of that, Culling Ritual is a great tool to get rid of common mana rocks, draw engines like Mystic Remora, as well as any other powerful cards that come into play quickly

With some upside and potential card advantage

When we're doing the Secret Lair executions of this, it really does unlock the team to go wherever they want to go with it

Effectively Opening Ceremony lets you draw 15 cards and cast whatever you can from them