In some cases that may be better for your opponents rather than giving you some creatures or extra cards from your library
It almost always involves putting a land from your hand directly onto the battlefield, though you can sometimes play lands from other zones if an effect allows it
This Phyrexia: All Will Be One Commander Deck set includes 1 ready-to-play deck of 100 Magic cards (2 traditional foil legendary cards, 98 nonfoil cards), a 2-card Collector Booster Sample Pack, 1 foil-etched Display Commander (a thick cardstock copy of the commander card with foil etched into the card's border and art), 10 double-sided tokens, 1 deck box (can hold 100 sleeved cards), 1 Life Wheel, 1 strategy insert, and 1 reference card
There are a few ways to stop it, basically anything that counters an activated ability, but theyre not super common in Commander
And finally, the last card in my Set Review: Tor Wauki, the Younger
Bastion of Remembrance survives your sweepers