Mahabharata Drona Parva Chapter 175:4

Mahabharata Drona Parva (Ghatotkacha-badha Parva) Chapter 175:4 Indeed, he began to fight with Karna, aided by his illusion and displaying the greatest activity. Showers of shafts fell from an invisible source from the welkin. Then Bhimasena's son, endued with great prowess of illusion, O foremost of the Kurus, assumed a fierce form, aided by those powers, began to stupefy the Kauravas, O Bharata! The valiant Rakshasa, assuming many fierce and grim heads, began to devour the celestial weapons of the Suta's son. Soon again, the gigantic Rakshasa, with a hundred wounds on his body seemed to lie cheerlessly, as if dead, on the field. The Kaurava bulls then, regarding Ghatotkacha deed, uttered loud shouts (of joy). Soon, however, he was seen on all sides, careering in new forms. Once more, he was seen to assume a prodigious form, with a hundred heads and a hundred stomachs, and looking like the Mainaka mountain. Once again, becoming small about the measure of the thumb, he moved about transversely or soared aloft like the swelling surges of the sea. Tearing through the earth and rising on the surface, he dived again into the waters. Once seen here, he was next seen at a different place. Descending then from the welkin, he was seen standing, clad in mail, on a car decked with gold, having wandered through earth and sky and all the points of the compass, aided by his powers of illusion. Approaching then the vicinity of Karna's car, Ghatotkacha, with his ear-rings waving, fearlessly addressed the Suta's son, O monarch, and said, "Wait a little, O Suta's son. Whither shalt thou go with life, avoiding me. I shall today, on the field of battle, quell thy desire of fight." Having said those words, that Rakshasas, of cruel prowess and eyes red like copper in wrath, soared aloft into the sky and laughed aloud. Like a lion smiting a prince of elephants, he began to strike Karna, pouring upon him a shower of shafts, each of the measure the Aksha, of a car. Indeed, he poured that arrowy shower upon Karna, that bull among car-warriors, like a cloud pouring torrents of rain on a mountain, Karna destroyed that shower of arrows from a distance. Beholding his illusion destroyed by Karna, O bull of Bharata's race, Ghatotkacha once more created an illusion and made himself invisible. He became a high mountain with many summits and abounding with tall trees. And from that mountain incessantly issued streams of lances and spears and swords and clubs. Seeing that mountain, which resembled a mighty mass of antimony, with its streams of fierce weapons, on the welkin, Karna was not at all agitated. Smiling the while, Karna invoked into existence a celestial weapon. Cut off with that weapon, that huge mountain was destroyed. Then the fierce Ghatotkacha, becoming a blue cloud with a rainbow, in the welkin, began to pour upon the Suta's son a shower of stones.