Mana is the current amount of
Spirit a creature has.
Spirit is the max amount of
Mana a creature can have.
When a creature casts a Spell they spend
Mana, which d
RAWs on their
Spirit. A 1st level
Spell takes 1
Mana, a 2nd level
Spell takes 2
Mana, and so forth. Once a creature's
Spirit reaches zero, they cannot cast any
Spells beyond
Cantrips.