Dastardly Planning

Each turn, at the beginning of your upkeep,
put a time counter on dastardly panning.
{t} Remove 5 time counters, Sacrifice Dastardly Planning: Exile target creature, Planeswalker
and land. Opponents collectively discard 4 cards, lose
10 life,
and sacrifice 3 creatures.
Opponents may remove time counters at any time by Dueling. ( To dual roll a die. Highest roller wins. Loser loses three life. On this card however, they remove a time counter instead.)