USS Stephen Potter

If a creature dealt combat damage to you, you
may pay {2}{r}{r}{p/r} and destroy that creature.

{p/r}, {t}: Destroy target creature with flying.
{p/r}{p/r}{p/r}, {t}: Destroy target creature with
toughness 2 or less. You may pay X life to
destroy creatures with toughness 3 or greater,
where X is that creature's toughness.