Xathrid Gorgon

Whenever another creature enters, you may put X +1/+1 counters on this creature, where X is that creature's power.

Magmaquake deals X damage to each creature without flying and each planeswalker.

When this creature enters, search your library for a creature card with deathtouch, hexproof, reach, or trample and reveal it. Shuffle and put that card on top.

At the beginning of your upkeep, draw a card. T: This artifact deals 1 damage to any target.

This land enters tapped. Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.) T: Add C.