(Subtypes include but are absolutely not limited to: Plains, Equipment, Aura, Arcane, Jace, Curse, Urza's, Ulamog's, etc.) The ability that defines Subgoyf's power and toughness applies in all zones, not just the battlefield
Previous rules did require the card to be cast, but with Murders at Karlov Manor in February 2024, this was updated to be an option
Mindbreak Trap Rating: 0/10 Casting multiple spells in a turn is nowhere near common enough in a game of Limited to rely on it
Enchantment Color tag templates(None) Dragon Cultist Commander creatures you own have "At the beginning of your end step, if a source you controlled dealt 5 or more damage this turn, create a 4/4 red Dragon creature token with flying." Legendary Enchantment - Background Color tag templates(None) Flameshadow Conjuring Whenever a nontoken creature you control enters, you may pay
Playing white and blue does come at a cost regarding consistency in your manabase
You can do it to all of them with Mycosynth Lattice or targeted effects from cards like Liquimetal Torque