If life points are dwindling due to creature abilities or enemy attacks, Pontiff of Blight can help
Read my comprehensive guide on how to build the current version of Charizard ex
Drawing Cards Usually the downside to drawing cards in black is the death of one of your creatures, or more frequently, a small loss of life
Remember when I said the best things you can do in Magic are play lands and draw cards
Herald of the Pantheon You need to play an enchantress deck for Herald of the Pantheon to work, but theres a heavy overlap between enchantments and lifegain thanks to cards like Sigarda's Splendor and Trudge Garden, plus this green creature offers great ramp via cost reduction
Sadly, the card that comes into play from Anticausal Vestige will not trigger Up the Beanstalk because it isnt being cast, but this is still fantastic