Given the condition that you have at least 18
, and only this, a Fractal, and a Ball Lightning in your hand (not exactly a given, but easy enough to pull off by turn 4 in mono:
Play Rift Aeon.
Play Ball Lightning
Fratcal
Play 7 more Ball Lightnings(hold one to fractal later).
Do 38 damage, and next turn have a 19|8
Turn 5:
Do 19 damage.
Turn 6:
Repeat Fractal/Ball Lightning, assuming you draw a fractal.
40 damage in BL+19 for this guy.
Turn 7: 35|8 Rift Aeon.
This is assuming a deck that carries nothing but pillars, fractal, ball lightning, and a few of these. Of course this is the ideal draw, there's always the chance your hand is clogged with more than one fractal or Rift Aeon, so it may not be this bad. You could also carry Parallel Universe, copy a huge one of these guys but don't kill any BL this way it never dies. That just risks clogging your hand more though.
Positives:
Huge potential for big damage
Very good in mono
Negatives:
Can be victim to Paradox, Rewind, other creature control (it could die without getting to attack if it is Congealed or hit with Basilisk's Blood, etc...)
Mono
is already really good, may not need a boost.
I listed the mono thing for both... which is weird. I like it when mono/duo decks get boosts, but the fact that it is already a really good mono makes me hesitant to support it as much. It would be like adding something that made a life rush or fire rush better. Overall, cool idea. Potential for a very fun deck here.