By A Mystery Man Writer
Cannot be Normal Summoned/Set. Must be Special Summoned (from your hand) by sending 3 "Cubic" monsters you control to the Graveyard, and cannot be Special Summoned by other ways. If Summoned this way, this card gains 3000 ATK. This card can make a second and third attack during each Battle Phase. If this card in your possession is sent to your Graveyard by your opponent's card (by battle or card effect): You can target up to 3 "Cubic" monsters in your Graveyard; Special Summon them, then you can add 1 "Cubic" card from your Deck or Graveyard to your hand.
Yu-Gi-Oh! Wiki - Buster Gundil the Cubic Behemoth
YUGIOH-Buster Gundil The Cubic Behemoth MVP1-ENG35 GOLD Rare 1st Edition
Buster Gundil the Cubic Behemoth - Yu-Gi-Oh! Master Duel Vietnam
Buster Gundil the Cubic Behemoth 4 Super Parallel 3-card set Tera (Used) (1247846613), magi -TCG Marketplace
People say that Cubics only need a 1 or 2 more support cards to be really good, so I made some. How'd I do? : r/yugioh
Buster Gundil the Cubic Behemoth, Card Details
My Cubic Deck List IRL
BUSTER GUNDIL THE CUBIC BEHEMOTH
YGOrganization [20TH-C] “Cubic” Reprints
Buster Gundil the Cubic Behemoth - Yu-Gi-Oh! Card Database - YGOPRODeck
My Cubic Deck List IRL