Bombadil's Song

Target creature you control gets +1/+1 and gains
hexproof until end of turn. The Ring tempts you.
(A creature with hexproof can't be the target of
spells or abilities your opponents control.)
"Hey dol! Merry dol! Ring a dong dillo!
Ring a dong! Hop along! Fal lal the willow!
Tom Bom, jolly Tom, Tom Bombadillo!"