Lore Seeker

Flash
Adaptive Shimmerer enters the battlefield with three +1/+1 counters on it.

Look at the top three cards of your library. You may reveal a creature or land card from among them and put it into your hand. Put the rest on the bottom of your library in any order.

Vigilance
At the beginning of your end step, you gain 1 life for each creature you control with vigilance.

Trample
{3}{G}: Almighty Brushwagg gets +3/+3 until end of turn.

Look at the top three cards of your library. Put one of them into your hand and the rest on the bottom of your library in any order.

Mutate {5}{U}
Whenever this creature mutates, tap up to X target creatures, where X is the number of times this creature has mutated. Those creatures don't untap during their controller's next untap step.

Mutate {5}{G}
Whenever this creature mutates, exile cards from the top of your library until you exile X permanent cards, where X is the number of times this creature has mutated. Put those permanent cards onto the battlefield.

Flying
Cycling {2}{U}
When you cycle Avian Oddity, put a flying counter on target creature you control.

Return target creature card from your graveyard to the battlefield. When you do, it fights up to one target creature you don't control.

Exile up to three target enchantments.
Cycling {2}

When Bastion of Remembrance enters the battlefield, create a 1/1 white Human Soldier creature token.
Whenever a creature you control dies, each opponent loses 1 life and you gain 1 life.

Exile target creature with power 4 or greater.

Blazing Volley deals 1 damage to each creature your opponents control.

{1}, {T}: Blisterspit Gremlin deals 1 damage to each opponent.
Whenever you cast a noncreature spell, untap Blisterspit Gremlin.

Flash
When Blitz Leech enters the battlefield, target creature an opponent controls gets -2/-2 until end of turn. Remove all counters from that creature.

Blitz of the Thunder-Raptor deals damage to target creature or planeswalker equal to the number of instant and sorcery cards in your graveyard. If that creature or planeswalker would die this turn, exile it instead.

Destroy target creature. Put a menace counter on a creature you control.

Bloodfell Caves enters the battlefield tapped.
When Bloodfell Caves enters the battlefield, you gain 1 life.
{T}: Add {B} or {R}.

Blossoming Sands enters the battlefield tapped.
When Blossoming Sands enters the battlefield, you gain 1 life.
{T}: Add {G} or {W}.

{T}: Add {C}.
{3}, {T}: Draw a card. Activate this ability only if you control a creature with power 4 or greater.

Mutate {2}{B/G}{B/G}
Whenever this creature mutates, return target permanent card from your graveyard to your hand.

Draw four cards.
Cycling {1}

Boot Nipper enters the battlefield with your choice of a deathtouch counter or a lifelink counter on it.

Bristling Boar can't be blocked by more than one creature.