Skull Gatherer

If a nontoken creature an opponent controls
would die, exile it instead. When you do, untap
target Swamp unless an opponent pays {1}.
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''Far along the anthracite sands of Onea, in a maze
of shadows cast by sempiternal dead willows, many
explorers have passed in search of fortunes, and many
of them disappeared in search of issues, leaving
nothing behind but a few morbid legends and songs.''
—A lost explorer's journal, 674th entry