Merieke Ri Berit doesn't untap during your untap step.: Gain control of target creature for as long as you control Merieke Ri Berit. When Merieke Ri Berit leaves the battlefield or becomes untapped, destroy that creature. It can't be regenerated.
Cast this spell only if you control a snow land.Cumulative upkeep (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)Creatures with flying don't untap during their controllers' untap steps.
Cumulative upkeep (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)If tapped for mana, Plains produce , Swamps produce , Mountains produce , and Forests produce instead of any other type.
Cumulative upkeep (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)Creatures that attacked during their controller's last turn can't attack.