Cease / Desist Cease / Desist covers a lot of angles
As you'd expect from a Demon of Chaos from deep within the Warp, he's a bit of a double-edged knife: you can gain huge hand advantage when you play him thanks to the Prince of Chaos ability, but it's a one-off ability that could also end up dealing more damage to you than you'd like
But why in the world does it have lifelink
There are other ways to get around protection, but they usually entail more niche cards like Everlasting Torment or Rain of Gore
On his front side, his power and toughness get a boost equal to the card you have in hand and each foretold card you own in exile
Much like Black Bolt and White Flare, which introduced the BWR, Mega Evolution has introduced a new rarity to the TCG, the MUR, or Mega Ultra Rare