dungeon mayhem card sleeves "Dungeon Universalis"+ Expansions Compatible Sleeve Bundle (8803 X 7, 8810 X 8, 8816 X 3) These premium sleeves are 125% thicker than the regular sleeves Dungeon Mayhem sleeve recommendations for

The price per card isn't quite as good as that of Battle Pack 3: Monster League or Shadow Specters: 1st Edition, but you're unlikely to see as many duplicates, and if there are only a few cards you're hoping to find, there's a chance you'll pull them in your first couple of packs anyway

Thoughtseize is the premier hand disruption spell in Pioneer and a staple in multiple top-tier decks

Brave the Elements You need to be in mono-white to properly leverage Brave the Elements, but it makes up for the restriction with efficiency

Combining Magnezone with Safeguard Oricorio and plenty of Supporters like Guzma and Copycat makes for an interesting, Stage 2-dependent deck

Attack directly with Gene-Warped Warwolf equipped with an Equip Magic Card, then use Tailor of the Fickle to pass that Equip Magic Card to another of your monsters and attack for more damage