This one has the appearance of another Colocasia "Black Magic" and more accurately with the mettalic sheen of "Black Ripple" but it is actually mistaken for a Colocasia species which is really a Jewel Alocasia species.
It is a small plant with a brilliant foliage appearance. This Alocasia infernalis is truly a gem and a lot of care is required to make sure it doesn't rot, go dormant and disappear away.
Lighting:
Not too hot that will jade or burn the foliage and not too shaded that the leaves will start to turn yellow and wither away - a bright shade is the most ideal thing for this one.
Medium:
I often find this one grown and cultivated inside a cocopeat and end up killing it when overwatering it. And thus removing the access cocopeat and mix the medium 50% cocopeat with 50% sand to create the fast draining factor for watering purpose.
Watering:
Overwatering is the main reason why this plant dies - do be very concern about this matter.
Feeding:
I find this is the most important factor - without proper feeding this plant will slowly will loose it leaves - one in a week and eventually goes dormant. It does however have a corm (bulb) that is very important to consider not to overwater it to cause it to go rotting inside the soil. Thus - proper care is required that it won't go dormant and totally lost.
Though - it may go dormant - do make sure it doesn't rot away.
Also I had found with my research the best fertilizer that works for this one is root hormone known as B1 and osmocote fertilizers. I believe seaweed solution too works best. The most important factor is getting the right balance and very much fall in the trial and error factors - it is somehow not a easy plant to cultivate but truly a rewarding one.