If you dont need the aggression, Jeskai gives you a backup plan that draws a card whenever your creatures hit a player, keeping the gas flowing while you keep turning sideways
Deathknell Kami Soulshift 1 is cool, but is a 0/1 flyer that dies in a blaze of mediocrity worth it
Players can respond to the reflexive triggered ability as normal, knowing the amount of damage that will be dealt as that ability resolves
Its worth noting that if a card is horribly off-center to the point where pieces of art are missing or the borders are exaggerated, youre probably looking at a misprint
Of course, areas where the opponent invests additional buffs will be the most obvious and common routes, but there will be almost as many avenues for two-for-ones as there are games of Magic played
Consider its card type, any effects that modify when you could cast it (such as flash), and any other effects that stop you from casting it (such as from Meddling Mage's ability) to determine if and when you can do this