Complex sentence: Calling himself Madman, Sterns hatches a plot to kill the Hulk, giving him a swiftly deteriorating poison injection and putting him in conflict with various members of his rogues gallery, most notably the Abomination, turning weaker and more emaciated for every battle.
Split into simpler sentences: Calling himself Madman, Sterns hatches a plot to kill the Hulk, giving him a poison injection that rapidly deteriorates his physical state. This puts the Hulk in conflict with various members of his rogues gallery, most notably the Abomination, turning weaker and more emaciated for every battle.