Siphon Tactic

{t}, {x}: Each player puts the top X cards of his or her library in his or her graveyard.
{t}, Sacrifice Siphon Tactic: Exile all cards from all graveyards, for each cards exiled this way, its owner puts the top card card of his or her library in his or her graveyard.
"Tactics take time to prepare, cut that time and your opponents are left without any plans."