Well worth the 8 mana spent on it
The Heroes need to discuss which card(s) they think should be used, to make things harder for the decks they are playing
Should you fail to pay, Primordial Ooze not only taps itself (and thus becomes useless), but it will deal that much damage to you
Sheltering Ancient In a Commander game where you have at least three opponents, Sheltering Ancients downside is lower than in a 2-player game
While you have to wait until your next turn to put those extra lands to good use, Rootweaver Druid is a fun way to help all players
One of the strangest and, surprisingly, most effective cards in the original black burn deck was Sleeper Agent, a one mana 3/3 that we have to give to our opponent when we play it and then deals two damage to its controller on their upkeep