While Cloud having indestructible on your turn means it can fearlessly attack into blockers, it also combines with many of the battlefield sweepers you would otherwise use to reset the battlefield
There are more traditional transforming cards, such as Garland, Knight of Cornelia, hybrid cards like Jill, Shivas Dominant, and sidequest enchantments
If damage from a creature source is prevented this way, Comeuppance deals that much damage to that creature
If you happen to be in Orzhov colors, Unburial Rites is a classic reanimation spell
Recently he's dabbled in Oathbreaker and Pendragon
Its also a way to speed up the delirium process on turn 2, and later youll get a powerful black creature