Easy Way

You may sacrifice a creature. If you do, return that creature card your graveyard to the battlefield in the end of turn. That creature gains +1/+1 and becomes a Spirit in addition to its other types.
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"Desertion was common there in Kamigawa, It was always the easiest way to say 'I can not take it anymore'. I think somehow they knew. Only the dead know the end of the war."
-Kits's diary of war