While you control City on Fire, if a creature you control with trample would deal combat damage to a blocking creature, you must assign its unmodified damage
You'll be able to cast cards you exile if timing rules allow (so, instants, mostly), but you won't be able to play a land that turn
The number of spells you've cast is counted only as Murmuration's last ability resolves
Doomsday Excruciator They finally did it, the ultimate mill card for 100-card decks
I had to cut my Enchantments and Artifacts to the bone and still cut quite a few Instants to make room for the three nasty Sorceries I'm including, but it was all worth it
Clefairy's attack, Full Moon Rondo, is incredibly cheap, costing only one Psychic Energy and one Colorless