This ability can be used either on your own items, for example The Robot Queen to increase your Ink or on your opponents one to stop their strategy
If they kill each other, we lose no more soldiers today. Orthion, Lavabrink captain Illustrated by Viktor Titov Standard Not Legal Alchemy Not Legal Pioneer Legal Historic Legal Modern Legal Brawl Legal Legacy Legal Comp
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Note a few things here, first, it's doesn't read you or your stuff, so an Earthquake or Pyroclasm won't hit you or your stuff for more damage
Ruby has traditionally struggled with card draw, typically leaning on Amethyst to fill in that hole
Other useful burn spells include Searing Blaze, Skullcrack, and Boros Charm