David, Harbinger of Ruin

Damage cannot be prevented.
When David, Harbinger of Ruin dies, create a 2/1
red elemental token with, If a source would deal
damage to an opponent or a permanent an opponent controls, that source deals double that damage to
that player or permanent instead and a 1/2 white elemental token with, If a source would deal
damage to you or a permanent you control, prevent
half that damage, rounded up.