Thirst for Knowledge

Defender Put a -0/-1 counter on this creature: Add G. Activate only once each turn.

Target player loses 2 life and you gain 2 life. Storm (When you cast this spell, copy it for each spell cast before it this turn. You may choose new targets for the copies.)

Return target creature card from your graveyard to the battlefield.

When this creature enters, you may return target card from your graveyard to your hand.

This artifact enters with three arrowhead counters on it. At the beginning of your upkeep, if there are no arrowhead counters on this artifact, sacrifice it. T, Remove an arrowhead counter from this artifact: Put a -1/-1 counter on target creature.

T: Add G. T: Target 1/1 creature gets +1/+2 until end of turn.

As an additional cost to cast this spell, sacrifice an artifact. Shrapnel Blast deals 5 damage to any target.

T: Add C. T: This land deals 1 damage to target attacking creature. Activate only during the end of combat step.