Uniting Sigil

You project a symbol of your faith, your organization,
your cause, or some other symbol with significance to you
and your allies. The symbol appears on the armor, shield,
or helmet or above the head of each friendly creature of
your choice within 10 feet of you, including you, and sheds
dim light in a 5-foot radius. Until the spell ends, each
target can use its reaction to cause one of the following
effects. The symbol then disappears from the target,
ending the spell on that creature.
• Resolve. When it fails a saving throw, the target can
use its reaction to reroll the saving throw and must use
the new roll.
• Retreat. When it is targeted by a melee attack, the
target can use its reaction to move up to half its speed
without provoking opportunity attacks.
• Revenge. When it takes damage from an attack
or spell, the target can use its reaction to cause the
attacker or caster of the triggering spell to take radiant
damage equal to your spellcasting ability modifier.
At Higher Levels. When you cast this spell using a spell
slot of 3rd level or higher, the range of the spell increases
by 5 feet for every two slot levels above 1st.