"Nyxborn Unicorn"
Bestow {3}{W} (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached to a creature.) Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.) Enchanted creature gets +2/+2 and has mentor.
Enchantment Creature — Unicorn
standard:
not legal
future:
not legal
historic:
not legal
timeless:
not legal
gladiator:
not legal
pioneer:
not legal
explorer:
not legal
modern:
not legal
legacy:
not legal
pauper:
not legal
vintage:
not legal
penny:
not legal
commander:
not legal
oathbreaker:
not legal
standardbrawl:
not legal
brawl:
not legal
alchemy:
not legal
paupercommander:
not legal
duel:
not legal
oldschool:
not legal
premodern:
not legal
predh:
not legal
High - Low
