Sauron, the Lidless Eye

Unlike 52-score Obsidian Charmaw, Sauron has no cost reduction or decisive niche; a five-mana 4/4 with temporary theft is a speculative test.

Could be wrong if A reliable Rakdos sacrifice shell could turn the stolen creature into permanent value.

A five-mana 4/4 and one-turn theft effect lack the mana efficiency and lasting impact normally needed for a Legacy slot.

Could be wrong if Fast mana plus a metagame rich in singular large creatures could create a narrow use.

Temporary theft is useful with sacrifice outlets, while repeatable +2/+0 and 2 damage to each opponent can close token-heavy multiplayer boards.

Could be wrong if Without a board, sacrifice outlet, or plentiful mana, it is merely an expensive 4/4.

The ETB creates a large immediate combat swing, and its repeatable team pump plus life loss is excellent in stalled boards; the 4/4 body remains solid.

Could be wrong if Unknown speed, fixing, and removal may make five mana too slow or reduce its ability to exploit the stolen creature.