sands of time
Class: mage : 3
Damage Type: -2 to physical stats to living, untyped to undead
Syntax: cast CLASS sands of time on TARGET

You temporarily age the target, immediately advancing it two age categories further. The target immediately takes the age penalties to Strength, Dexterity, and Constitution for its new age category, but does not gain the bonuses for that category. Undead creatures instead recieve untyped damage.