If a 4 might unit with a +1 buff has taken 4 damage, will it die if Call to Glory is used to remove the buff?

Ruling: Under current rules, the unit will not die immediately when the buff is removed as a cost, because there is no cleanup at that moment. However, if anything is played in reaction before Call to Glory resolves, it will trigger a cleanup at resolution, killing the unit before Call to Glory can resolve.

Sequence:

• Call to Glory targets the unit and removes the buff as a cost
• The unit becomes 4 might with 4 damage but does not die immediately (no cleanup)
• If no reactions are played, Call to Glory resolves and the unit survives
• If any card is played in reaction, cleanup triggers at resolution, killing the unit before Call to Glory can resolve

Nuances:

• This ruling may change in the next Comprehensive Rules Document (CRD), which will have more cleanups