Chromatic Lantern enables wild things, but it's also a devastating loss when it's inevitably blown up by all the format's flexible removal options
If its a creature card, you draw cards equal to its power and you gain life equal to its toughness
But for now, let's discuss this in the comments below
On-curve, good early for smashing, good later to breaking out of board stalls, and plays well with others
If it just has a couple creases on the corners or has slight water damage, you could easily pick up the copy you want for your Commander deck at a much lower price than the other copies currently available
Senu's last ability will trigger only if Senu is already exiled at the point immediately after blockers are declared and at least one legendary creature you control that attacked isn't blocked