Lore Seeker

Choose one —
• Abrade deals 3 damage to target creature.
• Destroy target artifact.

Double strike
Eternalize {3}{W}{W}

Exile target nonland permanent. You lose 3 life.

Cascade
Bituminous Blast deals 4 damage to target creature.

Put X -1/-1 counters on each creature. Shuffle Black Sun's Zenith into its owner's library.

Blightning deals 3 damage to target player or planeswalker. That player or that planeswalker's controller discards two cards.

As Blood Crypt enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

First strike, protection from white

Mentor
{2}{R}{W}: Boros Challenger gets +1/+1 until end of turn.

Each other Warrior creature you control enters the battlefield with an additional +1/+1 counter on it.
Each creature you control with a +1/+1 counter on it has trample.

Choose a color. White creatures you control gain protection from the chosen color until end of turn.

As Breeding Pool enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

Kicker {4}
Burst Lightning deals 2 damage to any target. If this spell was kicked, it deals 4 damage to that permanent or player instead.

Counter target spell.

Exile target black or red permanent.

Artifact spells you cast have convoke.

When Conclave Naturalists enters the battlefield, you may destroy target artifact or enchantment.

Put target attacking creature on the bottom of its owner's library. Its controller gains life equal to its toughness.

Corrupt deals damage to any target equal to the number of Swamps you control. You gain life equal to the damage dealt this way.

Target opponent sacrifices a creature.

Trample
Cryptborn Horror enters the battlefield with X +1/+1 counters on it, where X is the total life lost by your opponents this turn.

Choose two —
• Counter target spell.
• Return target permanent to its owner's hand.
• Tap all creatures your opponents control.
• Draw a card.

Fabricate 2
Whenever Cultivator of Blades attacks, you may have other attacking creatures get +X/+X until end of turn, where X is Cultivator of Blades's power.