Herald of Eternal Dawn have indestructible, protection from red or protection from creatures.
Steps
Activate
Frenetic Efreet an arbitrarily large number of times by paying ({0} magic symbol) .
Resolve a
Frenetic Efreet ability, causing you to flip a coin.
Karplusan Minotaur triggers. If you won the flip, it deals 1 damage to any target you choose. If you lost the flip, it deals 1 damage to a target of an opponent's choosing. You cannot lose the game due to this damage due to
Herald of Eternal Dawn, and
Karplusan Minotaur and
Herald of Eternal Dawn cannot be destroyed due to its indestructibility or protection.