Most popular in the MtG Commander format, this reliable enchantment lets players draw a card every time an opponent casts a spell unless they pay one mana
Aerith, Last Ancient offers a lifegain payoff you will almost never pull off in an actual game because aside from Sephiroth, Fallen Hero or Wrecking Ball Arm there's no other way to reliably get her to 7 power and very little lifegain in the deck otherwise
Now that you have Lion Heart, you may want to check out some of the other ultimate weapons you can forge Rinoa, Zell, Selphie and the rest
14 Kelsien, The Plague Starting off as a 3/3 Assassin, Kelsien, the Plague gets +1/+1 for each experience counter you have
You may play the exiled card this turn." In short, you pay two mana and effectively get to draw two cards
As a reminder, I make my list myself, and then refer later to other places like EDHREC.com or other places