There are tons of spells that target multiple things
At the time that Buzzwole GX dominated, Regirock EX and Strong Energy were both still in rotation, both of which powered up Buzzwole GX's attacks
Theres an argument to run Commanders Sphere due to the card draw ability, but on turn 3 Id much rather be playing a Zombie than a mana rock in this deck, so I dont want too many rocks
All the usual rules for alternative casting costs apply to Spectacle
Urzas Saga finds Cookbook (or the Expedition Map for the next Saga or the missing Tron piece), gives you something to do with your mana and a reward for making all these trinkets, and is a crucial source of colourless mana for the eventual Emrakul turn
The ceiling here is impressive, and it'll run away with some games