Enchant creature you control
Enchanted creature gets +1/+1.
Whenever enchanted creature deals combat damage to a player, you may sacrifice Flamespeaker's Will. If you do, destroy target artifact.
If another player gains control of the enchanted creature, Flamespeaker's Will will be put into its owner's graveyard.
You decide whether to sacrifice Flamespeaker's Will as its triggered ability resolves. If it's not on the battlefield at that time, you can't sacrifice it and destroy the target artifact.