One white mana, instant speed, exile
Khrn rewards us with card draw when he leaves our side of the battlefield, and we can mitigate any damage directed towards him by transferring control to a new player
Four mana is a lot, having it spare all in one go to do something that has no impact on the board just isn't viable too much of the time
With the addition of Unholy Heat to Modern, not even Lightning Bolt has been able to fully withstand the power creep of the last few years, and I personally would place it below Unholy Heat in power level when taking into consideration the context of the Modern metagame
When investing in this asset class, its crucial to research, consult with experts, and acquire the necessary knowledge on how to mitigate risks and make the most of your portfolio
If you or an opponent manage to remove cards from your graveyard that pushes you back under four card types, it will immediately switch off again