Oath of Druids, Natural Order, Omniscience, and Dream Halls all can put Progenitus into play for a discount, at which point your opponent has two turns to draw an answer, and effective answers to Progenitus are few and far between
Steels slower pace can make it a good ink colour to pair with sapphire cards, which can provide the extra ink you need to get big cards out earlier, or a faster colour such as ruby, which can provide some faster options earlier in the game
Sadly Lighthouse, despite getting a really powerful early run in the cube, is now seeing a huge fall off in power and playability
Specifically, SIRs often go for an ultra-detailed, highly textured image, with a dense, almost abstract background
Cyber Dragon Herz X LIGHT Level 1 [ Machine / Effect ] ATK 100 DEF 100 This card's name becomes "Cyber Dragon" while on the field or in the GY