Plunge into Darkness
Fifth Dawn — rare
Instant
Plunge into Darkness rulings:
2004-12-01: Everything other than the mode/entwine choice (and paying the , of course) is done on resolution.
2004-12-01: Assuming the entwine cost has been paid, the effect is (1) sacrifice any number of creatures, (2) gain 3 life for each sacrificed creature, (3) choose X, (4) pay X life, and (5) look at the top X cards of your library, put one into your hand, and exile the rest.