Bubble Snare, Capture Sphere, Castaways Despair, Charmed Sleep, Claustrophobia, and others usually cost three or four mana, and tap down a creature and keep it tapped down
Vivi Ornitier Final Fantasy Final Fantasy had plenty of powerful cards across the main set and Commander decks, but the clear title of most powerful card from Final Fantasy has to go to Vivi Ornitier
It's not a particularly close contest with the third most valuable Strip Mine either, especially when compared to Strip Mine #130, which is almost $100 more
Notably, while this is certainly a bit tricky to pull off, you arent forced to connect more than four times in combat with Frodo to end your opponent
Mosswood Dreadknight // Dread Whispers This is one of the brand-new adventure cards from WOE that's seeing quite a bit of play