digimon 02 the beginning cards Card Game gain 1 memory Adventure 02: The Beginning Pack

Battalion triggers whenever at least three creatures attack at the same time, and that includes your allies creatures

Not really a blue thing

Ill start off with my list and explain things later: Monsters: (18) 1 Bujingi Peacock 3 Bujin Yamato 1 Bujingi Turtle 1 Bujingi Hare 3 Bujingi Centipede 2 Bujin Arasuda 3 Brotherhood of the First Fist Bear 1 Bujingi Quilin 2 Bujingi Crane 1 Honest Spells: (13) 1 Dark Hole 3 Pot of Duality 1 Book of Moon 3 Forbidden Lance 2 My Body as a Shield 2 Fire Formation Tenki Traps: (9) 1 Bottomless Trap Hole 1 Bujin Regalia The Sword 2 Mirror Force 1 Compulsory Evacuation Device 3 Fiendish Chain 1 Solemn Warning Extra Deck: (15) 1 Bujintei Kagutsuchi 2 Bujintei Susanowo 1 Constellar Omega 1 Brotherhood of the Fire Fist Tiger King 1 No

Mox Amber sees plenty of play in the Modern deck Jeskai Breach where it becomes not just a fancy artifact but a combo piece as well