As long as your life total is greater than or equal to your starting life total, creatures you control get +1/+1.Whenever one or more creatures you control attack, you gain life equal to the number of attacking creatures.
Hexproof (This creature can't be the target of spells or abilities your opponents control.)Whenever an opponent casts a blue or black spell during your turn, put a +1/+1 counter on Witchstalker.
TramplePlay with the top card of your library revealed.You may cast creature spells from the top of your library. (Do this only any time you could cast that creature spell. You still pay the spell's costs.)
Flying (This creature can't be blocked except by creatures with flying or reach.)Whenever a creature dealt damage by Sengir Vampire this turn dies, put a +1/+1 counter on Sengir Vampire.
As long as you control eight or more lands, Woodborn Behemoth gets +4/+4 and has trample. (It can deal excess combat damage to the player or planeswalker it's attacking.)
Intimidate (This creature can't be blocked except by artifact creatures and/or creatures that share a color with it.)When Lifebane Zombie enters, target opponent reveals their hand. You choose a green or white creature card from it and exile that card.
If a red instant or sorcery spell you control or a red planeswalker you control would deal damage to a permanent or player, it deals that much damage plus 2 to that permanent or player instead.
Defender (This creature can't attack.)When a creature attacks you or a planeswalker you control, if Guardian of the Ages has defender, it loses defender and gains trample.