You can add green and white spells to your Bolas deck, but you should have a good reason doing so: gaining access to Conflux, for example, or recreating all five of Hour of Devastation 's Hours at the expense of your opponents
What makes Shroofus such a blast to build and play is that he turns anthems and pump spells into board presence with nearly unparalleled speed one-mana acceleration like Llanowar Elves or Elvish Mystic can have you attacking with Shroofus on turn 3 before most players have blockers and then every Saproling token that connects afterward only adds to the growing swarm
There are Basic (like Charmander), Stage 1 (Charmeleon) and Stage 2 (Charizard)
This makes some sense, since most players aren't too keen on planning around their opponent, no matter how low the bar is for having random creatures or artifacts in their graveyard
One application of Jace Ive actually loved seeing in Modern is its presence in sideboards as a threat to bring in against control decks or other fair decks
Bugenhagen, Wise Elder looks like a solid mana dork, drawing cards once youve ramped into or built your own large creature