GLaDOS the Everliving

Vigilance, Reach, Trample
{4}{t}, Choose one:
•Exile target permanent. Controlling player gains life equal to it's mana cost. It gains Flash and can be played by you at any time.
•Add 3 lands to the field from your deck tapped, shuffle your deck.
For Science—Whenever a creature is sent to your graveyard, you gain life equal to it's power or toughness, depending on which is higher.