When Baloth Null enters the battlefield, return up to two target creature cards from your graveyard to your hand.

Flying
When Balustrade Spy enters the battlefield, target player reveals cards from the top of their library until they reveal a land card, then puts those cards into their graveyard.

Haste
Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.)

Barrage of Boulders deals 1 damage to each creature you don't control.
Ferocious — If you control a creature with power 4 or greater, creatures can't block this turn.

When Bartered Cow dies or when you discard it, create a Food token. (It's an artifact with ", , Sacrifice this artifact: You gain 3 life.")

Flying (This creature can't be blocked except by creatures with flying or reach.)

Equipped creature has deathtouch and lifelink.
Equip

: Basking Rootwalla gets +2/+2 until end of turn. Activate this ability only once each turn.
Madness (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for .)
Hexproof (This creature can't be the target of spells or abilities your opponents control.)

Enchant creature
Enchanted creature has double strike. (It deals both first-strike and regular combat damage.)

Defender
: Target creature gains haste until end of turn.

At the beginning of combat on your turn, you may have target creature get +2/+0 until end of turn.

Double target player's life total. Shuffle Beacon of Immortality into its owner's library.

When Bear's Companion enters the battlefield, create a 4/4 green Bear creature token.

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

Level up (: Put a level counter on this. Level up only as a sorcery.)
LEVEL 1-3
4/4
LEVEL 4+
6/6
Trample

Whenever a creature you control attacks, you may put a quest counter on Beastmaster Ascension.
As long as Beastmaster Ascension has seven or more quest counters on it, creatures you control get +5/+5.

Delve (Each card you exile from your graveyard while casting this spell pays for .)
Target creature gets +6/+6 until end of turn.

When Beetleback Chief enters the battlefield, create two 1/1 red Goblin creature tokens.