When Smoke Screen is cast on Ravenbloom Student (reducing it from 2M to 1M), and then the opponent casts Hextech Ray killing one attacking Recruit, does Ravenbloom Student's momentum increase to 2M or stay at 1M due to Smoke Screen?

Ruling: Ravenbloom Student stays at 1M. Smoke Screen snapshots the unit's momentum when it resolves and applies a fixed -1M reduction for the rest of the turn, regardless of other momentum changes.

Sequence:

• Smoke Screen resolves on Ravenbloom Student (2M base)
• Smoke Screen snapshots the momentum and applies -1M for the rest of the turn
• Ravenbloom Student is now at 1M
• Hextech Ray kills one Recruit, triggering Ravenbloom Student's ability
• Ravenbloom Student would gain +1M (going to 2M base), but Smoke Screen's -1M still applies
• Final result: 1M

Nuances:

• Smoke Screen does not continuously reapply or recalculate; it takes a snapshot at resolution and maintains that fixed modifier