whenever you gain life draw a card mtg Rules Text: card, 46 cards mtg draw a card gain

All around, Id go with Firkraag and use the other options as ways to strengthen what youre doing

Atog Rarity: Common TYPE: Creature SUBTYPE: Atog CMC: 2 Mana cost: USD: $0.27 EUR: 0.22 TIX: 0.03 EDHREC RANK: 14718 (1/2) Sacrifice an artifact: This creature gets +2/+2 until end of turn

Every time you run through this combo you generate one extra mana

OUT Skullcrack IN Rending Volley Destructive Revelry Watch out for Batterskull post-board

For all of the details about these amazing folks, I recommend checking out Mark Rosewater's article today

One quick PSA before we dive in: cards with Firebend (like [[Azula, Cunning Usurper]]) may show red mana symbols in reminder text, but they do not count as red for colour identity