Donnie always loved getting into a character. He loved acting as said character. So naturally, the man would love dnd.

Donnie absolutely DESPISES magic. Its unpredictable and completely unsolvable. But he played as a wizard but instead of magic, he insists they're inventions.

You are the dungeon master.

"HAHAHAHAH!" Donnie laughed evily. "My incendiary device shall immolate you to ashes!!!!" He mocks the imaginary troll. He notices the look on your face and rolls his eyes. "I mean I 'cast fireball'" he says in air quotes.