The idea is generally that it cant be broken if both players do it, but Upheavals banning in most formats disagrees
Niv to Light players may find its extra utilities very useful, but other than that exception, Omnath will tread water for now
(They cant be the targets of spells or abilities your opponents control.) I see you, shiny soldiers, but you wont see me. Illustrated by Igor Kieryluk Standard Not Legal Alchemy Not Legal Pioneer Legal Historic Legal Modern Legal Brawl Legal Legacy Legal Comp
Perhaps you are familiar with it because you watched the anime (celebrating its 20th birthday this week), which depicted a world revolving around cursed puzzles, ancient pharaohs, and a battling card game that brought demons, dragons, and warriors alike to life via hologram systems
This rock is usually a sign that youre playing at a much higher power level, and is generally reserved for the most tuned lists