Merieke Ri Berit doesn't untap during your untap step. {T}: 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.
Spells your opponents cast that target Charix cost {2} more to cast. {3}: Charix gets +X/-X until end of turn, where X is the number of Islands you control.
Zendikar's seas are deeper than anyone can fathom.
Choose two — • Creatures you don't control get -3/-0 until end of turn. • Create two tapped Powerstone tokens. • Create a tapped 0/0 colorless Construct artifact creature token with "This creature gets +1/+1 for each artifact you control." • Scry 2, then draw a card.
{2}, {T}: Put a charge counter on this artifact. {T}, Remove any number of charge counters from this artifact: Add {R}, then add an additional {R} for each charge counter removed this way.
Equipped creature has "Whenever this creature attacks or blocks, it gets +1/+1 until end of turn for each attacking creature." Whenever a Soldier creature enters, you may attach this Equipment to it. Equip {2}