Cave People
{1}{R}{R}
Creature -- Human
1/4
Whenever ~this~ attacks, it gets +1/-2 until end of turn.
{1}{R}{R}, {T}: Target creature gains mountainwalk until end of turn. (It can't be blocked as long as defending player controls a Mountain.)
Dromosaur
{2}{R}
Creature -- Dinosaur
2/3
Whenever ~this~ blocks or becomes blocked, it gets +2/-2 until end of turn.
Flowstone Charger
{2}{R}{W}
Creature -- Beast
2/5
Whenever ~this~ attacks, it gets +3/-3 until end of turn.
Raging Gorilla
{2}{R}
Creature -- Ape
2/3
Whenever ~this~ blocks or becomes blocked, it gets +2/-2 until end of turn.