Istredd waits until he lands to turn and shove him playfully. Stop being so pleased with yourself. He never succeeds in sounding serious enough when he knows it's only going to make Lucifer happier to be scolded. Istredd doesn't give him his spear, he tosses it into the air and uses his telekinesis to slam down the sharp point directly through the back of the boar to pin it to the ground. At this point, it could try to struggle, but there was no hope.

You are very strong. Without magic, I wouldn't be able to hold it for a second. And Istredd is not weak in body, Lucifer's obviously supernaturally strong. He smiles at him.