To the Disaster

To the Disaster deals 4 damage to target creature or player. Then investigate once for every 2 damage sources you control have dealt this main phase, rounded down.
You may cast a Nahiri planeswalker with converted mana cost X or less from your hand without paying its mana cost, where X is the number of artifacts you control.
"You have devastated my plane, Sorin, so prepare to meet the end of yours."
--Nahiri