Use cards like Murmuration to knock players out of the game once you have enough creatures in play
It creates a creature, it pumps up the board, and then it still gives you card advantage
You also need to make sure you hit your land drops, either with draw effects (Qiqirn Merchant and Adventurers Airship provide usable bodies as well as draw smoothing) or cards that directly give you lands or mana (World Map, landcyclers, Blitzball)
You may have to rely on colorless threats or gold cards sometimes, but green has plenty of battlecruiser material to ramp into, like Old Gnawbone, Vaultborn Tyrant, or Apex Altisaur
The Robot part kind of matters, gives control the ability to take over if it comes down to a topdeck war
Collector Boosters are the best way to collect variant rares and mythic rares, as well as foil cards, and they're the only place to collect foil-etched, extended-art, and neon ink cards