Nyx Herald 

Enchantment Creature — Centaur Shaman
$0.15 #22126 0.21 6.6 years
At the beginning of combat on your turn, target enchanted creature or enchantment creature you control gets +1/+1 and gains trample until end of turn.
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Cards similar to Nyx Herald expected a card that isn't here?
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Bearer of Memory83%
$0.06↓#261110.274.5 years↓
"
: Put a +1/+1 counter on target enchantment creature. It gains trample until end of turn."
Karametra's Blessing78%
$0.12↓#8646↑0.41↑6.6 years
"Target creature gets +2/+2 until end of turn. If it's an enchanted creature or enchantment creature, it also gains hexproof and indestructible until end of turn."
Call of the Full Moon76%
$0.09↓#264190.53↑11.1 years↑
"Enchanted creature gets +3/+2 and has trample."