Florantina, Supreme Symbolist

Symbol Convoke (Your white creatures can help
cast this spell. Each creature you tap while
casting this spell pays for {1} or one mana of that
creature's color.)
You and other mono-white creatures you control
get Hexproof
At beginning of your upkeep, every opponent
becomes a 2/2 rebel token
I lead the class and protect my students with
every weapon I have