Creating as many goblins as you can to fuel Krenko is key, from Dragon Fodder to Mogg War Marshal, combined with haste enablers, and effects to make sure they connect (like the flavourfully named Goblin War Drums)
During the Battle Phase, when a Spell/Trap Card is activated (Quick Effect): You can negate the activation, and if you do, destroy that card, and if you do that, this card gains 500 ATK
Japanese-exclusive original Japanese Yu-Gi-Oh
It captures Laws strategic thinking from the Dressrosa storyline and opens the doors to unique ways to play
These theories came from datamined hidden accessories in the in-game shop, which included references to Lugia and Pichu
Different printers use different safe margins, but the principle is consistent: dont park your most important details in the danger zone