(If a permanent with a stun counter would become untapped, remove one from it instead.) If the target land is an illegal target as Magmatic Hellkite's last ability tries to resolve, it won't resolve and none of its effects will happen
For various amounts of mana, you can give a creature vigilance, deathtouch, or doublestrike for the turn, turning any creature into a deadly powerhouse
This card is a great way to start a game because it enters untapped within the first three turns, which gives a little more wiggle room than fast lands
Definitely nowhere near as good as when the Angel of Hope was still alive, but its not entirely useless
Lets take a look at what Dimir has to offer, and then take a look at unguilded black Gatecrash cards