If you are able to kill an opponents creature mid-combat and pump him as a combat trick, that can make for a huge blowout
Psychic Impetus is back to three mana and a +2/+2 boost and you scry 2 when it attacks
Finally, my favorite two for one, Return to Dust, which not only destroys two things, it pulls them clean out of the game, where not even the wishes can reach (No, seriously, the changed the way the wishes interact in EDH!) Well, these are my picks for the green and white staples
Illustrated by Mark Poole Standard Not Legal Alchemy Not Legal Pioneer Not Legal Historic Not Legal Modern Not Legal Brawl Not Legal Legacy Banned Comp
The card is
First, both pieces of the combo are very good in any kind of lifegain deck