This question already has an answer here:
Following up on a recent post,
"I am looking for some clarification on the card Gleam of Authority. The wording on the card is
Enchantment - Aura Enchant Creature Enchanted creature gets +1/+1 for each +1/+1 counter on other creatures you control.
There is also a tap ability to bolster and vigilance.
The problem I'm seeing with adjusting continuously, is if multiple Gleam of authorities are played. Does this create an infinite loop?