When Aurochs Herd enters the battlefield, you may search your library for an Aurochs card, reveal it, put it into your hand, then shuffle.
Whenever Aurochs Herd attacks, it gets +1/+0 until end of turn for each other attacking Aurochs.
4 /
4
{2}{R}{W}
Bruse Tarl, Boorish Herder
Legendary Creature - Human Ally
Whenever Bruse Tarl, Boorish Herder enters the battlefield or attacks, target creature you control gains double strike and lifelink until end of turn.
Partner (You can have two commanders if both have partner.)
3 /
3
{2}{G}
Call of the Herd
Sorcery
Create a 3/3 green Elephant creature token.
Flashback {3}{G} (You may cast this card from your graveyard for its flashback cost. Then exile it.)
{G}
Elvish Herder
Creature - Elf
{G}: Target creature gains trample until end of turn.
1 /
1
{5}{G}{G}{G}
End-Raze Forerunners
Creature - Boar
Vigilance, trample, haste
When End-Raze Forerunners enters the battlefield, other creatures you control get +2/+2 and gain vigilance and trample until end of turn.
7 /
7
{G}
Hidden Herd
Enchantment
When an opponent plays a nonbasic land, if Hidden Herd is an enchantment, Hidden Herd becomes a 3/3 Beast creature.
{4}{G}{G}
Hill Giant Herdgorger
Creature - Giant
When Hill Giant Herdgorger enters the battlefield, you gain 3 life.
7 /
6
{W}
Mtenda Herder
Creature - Human Scout
Flanking (Whenever a creature without flanking blocks this creature, the blocking creature gets -1/-1 until end of turn.)
1 /
1
{3}{G}
Nullmage Shepherd
Creature - Elf Shaman
Tap four untapped creatures you control: Destroy target artifact or enchantment.
2 /
4
{3}{G}{G}
Stampeding Elk Herd
Creature - Elk
Formidable -- Whenever Stampeding Elk Herd attacks, if creatures you control have total power 8 or greater, creatures you control gain trample until end of turn.
5 /
5
{8}{W}{W}
Storm Herd
Sorcery
Create X 1/1 white Pegasus creature tokens with flying, where X is your life total.
{2}{G}{G}
Trumpeting Herd
Sorcery
Create a 3/3 green Elephant creature token.
Rebound (If you cast this spell from your hand, exile it as it resolves. At the beginning of your next upkeep, you may cast this card from exile without paying its mana cost.)