There are other format specific rules such as everyone starting at 30 life, when you must give out information you create a treasure token, and an alternate way to make suggestions by exiling cards from your graveyard
The timing of when triggers fire and how they interact with other effects can get complex
Sure, you cant represent anything, but you lose the real value of activating your creature (and waste three mana you could have otherwise utilized)
Huatli and Angrath (which were used during Closed Beta before players could select their Avatar) will be available for purchase with either Gems or gold, and each of the ten guild leaders from Ravnica is also available
These two can really shine in this deck with minimal modifications and should help you pour even more fuel on the fires of chaos
If only one half is cast, the spell is the color of that half