Forest

Revitalize

Alpine Watchdog

Vigilance (Attacking doesn't cause this creature to tap.)

Taiga

King of the Pride

Giant Growth

Target creature gets +3/+3 until end of turn.

Isamaru, Hound of Konda

Savannah

Worldly Tutor

Search your library for a creature card, reveal it, then shuffle and put the card on top.

Lightning Bolt

Lightning Bolt deals 3 damage to any target.

Chandra's Magmutt

{T}: This creature deals 1 damage to target player or planeswalker.

Plateau

Savannah Lions

Nature's Lore

Search your library for a Forest card, put that card onto the battlefield, then shuffle.

Generous Stray

Rin and Seri, Inseparable

Whenever you cast a Dog spell, create a 1/1 green Cat creature token.
Whenever you cast a Cat spell, create a 1/1 white Dog creature token.
{R}{G}{W}, {T}: Rin and Seri deals damage to any target equal to the number of Dogs you control. You gain life equal to the number of Cats you control.