bloomburrow mtg booster box Play – Mox Boarding House Showcase cards Bloomburrow - Collector Booster Display

Cryomancer of the Ice Barrier X WATER Level 2 [ Aqua / TunerEffect ] ATK 1300 DEF 0 While you control another "Ice Barrier" monster, Level 4 or higher monsters cannot declare an attack

So he basically can get you passive lore for free

7 The Maelstrom Triggering when you planeswalker to The Maelstrom or at the beginning of your upkeep, you get to reveal the top card of your deck, putting it into play if it's a permanent if you want

The other card to boost ATK in this Deck is Skyscraper, the main Field Spell in the Deck

Then, all of your opponents level 4 or higher Digimon get -3000 DP and gain Security Attack -1 until the end of their turn