Yiazmat, Scourge of Ivalice can't be the target of spells or abilities you control.

Yiazmat, Scourge of Ivalice doesn't heal during each player's cleanup steps.

If Yiazmat, Scourge of Ivalice would be sent to a graveyard from anywhere, exile it instead.

Growing Threat — While Yiazmat, Scourge of Ivalice is at or below 10 toughness, it gets +6/+0.