Pathbreaker Ibex

Whenever this creature attacks, creatures you control gain trample and get +X/+X until end of turn, where X is the greatest power among creatures you control.

Scapegoat

As an additional cost to cast this spell, sacrifice a creature.
Return any number of target creatures you control to their owner's hand.

Crested Craghorn

Haste
Provoke (Whenever this creature attacks, you may have target creature defending player controls untap and block it if able.)

Mountain Goat

Mountainwalk (This creature can't be blocked as long as defending player controls a Mountain.)

Goatnap

Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn. If that creature is a Goat, it also gets +3/+0 until end of turn.

Thriving Ibex

When this creature enters, you get {E}{E} (two energy counters).
Whenever this creature attacks, you may pay {E}{E}. If you do, put a +1/+1 counter on it.

Frantic Scapegoat

Haste
When this creature enters, suspect it. (It has menace and can't block.)
Whenever one or more other creatures you control enter, if this creature is suspected, you may suspect one of the other creatures. If you do, this creature is no longer suspected.

Goatnapper

When this creature enters, untap target Goat and gain control of it until end of turn. It gains haste until end of turn.

Landscaper Colos

When this creature enters, put target card from an opponent's graveyard on the bottom of their library.
Basic landcycling {1}{W} ({1}{W}, Discard this card: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.)

Battering Craghorn

First strike
Morph {1}{R}{R} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)

Caprichrome

Flash
Vigilance
Devour artifact 1 (As this creature enters, you may sacrifice any number of artifacts. It enters with that many +1/+1 counters on it.)

Zodiac Goat

Stormwild Capridor

Flying
If noncombat damage would be dealt to this creature, prevent that damage. Put a +1/+1 counter on this creature for each 1 damage prevented this way.

Cloudgoat Ranger

When this creature enters, create three 1/1 white Kithkin Soldier creature tokens.
Tap three untapped Kithkin you control: This creature gets +2/+0 and gains flying until end of turn.

Colos Yearling

Mountainwalk (This creature can't be blocked as long as defending player controls a Mountain.)
{R}: This creature gets +1/+0 until end of turn.

Possessed Goat

{3}, Discard a card: Put three +1/+1 counters on this creature and it becomes a black Demon in addition to its other colors and types. Activate only once.

Capricopian

This creature enters with X +1/+1 counters on it.
{2}: Put a +1/+1 counter on this creature, then you may reselect which player this creature is attacking. Only the player this creature is attacking may activate this ability and only during the declare attackers step. (It can't attack its controller.)

Park Bleater

Whenever another creature you own enters, you get {TK}.
{W}, {T}: You may put a sticker on a creature you own that entered this turn.