Margaret, the Musketeer

{2}{u}{r}, {t}: Mark target creature. (Marked targets can be attacked by creatures with Marked Attack)
Position 4 — {ut}: Margaret, the Musketeer deals 2 damage to any target. (If in position 4 on upkeep, gain this effect. You can change positions only once per turn on main phase.)
"A champion markswoman - keen for a new kind of challenge." — the Ancestor