If my 3 might creature receives -3 might from Thousand Watcher, reducing it to 0, and I then play Discipline giving it +2 might, what is the final might value?

Ruling: Might modifications are applied once and do not persist as ongoing effects. After playing Discipline, your creature will be at 3 might.

Sequence:

• Creature starts at 3 might (base)
• Thousand Watcher applies -3 might (creature is now at 0)
• Discipline applies +2 might (creature is now at 2)
• Final might is 2 (base 3, minus 3, plus 2)

Nuances:

• The -3 from Thousand Watcher is not a continuous effect; it's a one-time modification that doesn't continue to reduce might after other buffs are applied