Beast Whisperer

Whenever you cast a creature spell, draw a card.

Ayula, Queen Among Bears

Whenever another Bear enters the battlefield under your control, choose one —
• Put two +1/+1 counters on target Bear.
• Target Bear you control fights target creature you don't control.

Elvish Mystic

Realmwalker

Changeling (This card is every creature type.)
As Realmwalker enters the battlefield, choose a creature type.
You may look at the top card of your library any time.
You may cast creature spells of the chosen type from the top of your library.

Mother Bear

{3}{G}{G}, Exile Mother Bear from your graveyard: Create two 2/2 green Bear creature tokens. Activate only as a sorcery.

Folk Hero

Commander creatures you own have "Whenever you cast a spell that shares a creature type with this creature, draw a card. This ability triggers only once each turn."

Wilson, Refined Grizzly

This spell can't be countered.
Vigilance, reach, trample
Ward {2} (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {2}.)
Choose a Background (You can have a Background as a second commander.)

River Bear

Islandwalk (This creature can't be blocked as long as defending player controls an Island.)

Balduvian Bears

Swords to Plowshares

Exile target creature. Its controller gains life equal to its power.

Fyndhorn Elves

Mirror Entity

Changeling (This card is every creature type.)
{X}: Until end of turn, creatures you control have base power and toughness X/X and gain all creature types.

Owlbear

Trample
Keen Senses — When Owlbear enters the battlefield, draw a card.

Birds of Paradise

Woodland Changeling

Changeling (This card is every creature type.)

Bear Cub

Llanowar Elves

Priest of Titania

{T}: Add {G} for each Elf on the battlefield.

Owlbear Cub

Mama's Coming — Whenever Owlbear Cub attacks a player who controls eight or more lands, look at the top eight cards of your library. You may put a creature card from among them onto the battlefield tapped and attacking that player. Put the rest on the bottom of your library in a random order.

Grizzly Bears

Werebear

{T}: Add {G}.
Threshold — Werebear gets +3/+3 as long as seven or more cards are in your graveyard.

Chameleon Colossus

Changeling (This card is every creature type.)
Protection from black
{2}{G}{G}: Chameleon Colossus gets +X/+X until end of turn, where X is its power.

Ashcoat Bear

Flash (You may cast this spell any time you could cast an instant.)

Beast Within

Destroy target permanent. Its controller creates a 3/3 green Beast creature token.