The Hole in Ismail's Chest

This is a feat that you can't get rid of. There's a hole in Ismail's chest. Being brought back from the dead sort of fixed it, and he's alive but it's very hard to breath. You lost 5 ft of speed and have disadvantage on all ability checks involving breathing or feats of endurance, for example running long distances, or climbing things. Jumping or lifting heavy objects all at once doesn't count. This will not affect saving throws unless it's very specifically a lung related attack. I can't think of any spells that do that, but maybe there are!