Gleam of Authority {1}{W}
Enchantment — Aura
Enchant creature
Enchanted creature gets +1/+1 for each +1/+1 counter on other creatures you control.
Enchanted creature has vigilance and "{W}, {T}: Bolster 1." (To bolster 1, choose a creature with the least toughness among creatures you control and put a +1/+1 counter on it.)
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Cards that do something similar expected a card that isn't here?
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Bravado 86%
$0.31#13625
"Enchanted creature gets +1/+1 for each other creature you control."
+1 more matching line
Vampirism 86%
$0.25#26400
"Enchanted creature gets +1/+1 for each other creature you control."
+1 more matching line
Conclave's Blessing 85%
$0.20#19105
"Enchanted creature gets +0/+2 for each other creature you control."
Sigil of the Nayan Gods 82%
$0.30#19028
"Enchanted creature gets +1/+1 for each creature you control."
+2 more matching lines