Ideas for new bloodborn spells

What are your guy's interesting ideas for some future bloodborn spells? Here are mine!

Vet - Sands of Time: reduce the hp of all minions except dervish by 1. A cool slow dominate the board thing

Abyss - Dark Hunger: reactivate a wraithling. Pretty self explanatory

Vanar - Sub zero: units that die this turn become 1/1 frozen corpse (vespyr). Think its a great way to spread the frozen domain of the vanar.

Song - Ancient Arts: resummon a minion on the field. This could give a way to cleanse dispels, refresh lantern fox, and opening gambits like sunset paragon and flameblood warlock!

Mag - Mutation: turn a minion into a 'hybrid' giving it +3 / -2. Hybrids rapidly decay and lose 1 hp at the end of your turn. Think its an interesting way to promote the evolution theme of magmar.