Aurochs

Creature — Aurochs    (CMC:4)

Trample Whenever Aurochs attacks, it gets +1/+0 until end of turn for each other attacking Aurochs.

One Auroch may feed a village, but a herd will flatten it.

225 Coldsnap Theme Deck IA • ENKen Meyer Jr.

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Legal in: Ice Age Block,Legacy,Vintage,Freeform,Prismatic,Tribal Wars Legacy,Singleton 100,Commander

Oracle Text (click to copy):

10/4/2004
The bonus is not applied until after you check for attack legality, so it is a 2/3 creature when declaring attackers.
10/1/2009
The ability counts the number of attacking creatures with the creature type Aurochs, not just those named Aurochs.