Sisters of the Flame

It's got some limited uses. Since red doesn't have many mana producing creatures, this is as good as you'll get for acceleration. In a burn deck this can either produce mana for your Fireballs or provide some damage as you take out the opponent's defenses with burn spells. Another tactic to use with red decks is use it with Manabarbs. Play a bunch of sistas and then drop a Manabarbs or two - you can use mana w/o damage and your opponent takes damage for tapping their lands.