Levistus's_Leviathan
5e Freelancer
Black Pudding 15
Gelatinous Cube 17
Gray Ooze 10
Gelatinous Cube 17
Gray Ooze 10
You cut down my Treant!Black Pudding 16
Gelatinous Cube 16 +1 = 17
Gray Ooze 15
Treant 1 -2 = -1

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.