Spirit Grafter

Above, a cocoon is shaking and wriggling, about to burst forth! ...it stops wriggling. The cocoon ignites! What is going on? In a flash of light and flame, a Spirit Grafter rushes into you, threatening to merge with your being to become complete. Let It In Heal 25 HP. Add Metamorphosis to your Deck. Or Rejection Lose 10 HP. Upgrade a card.

Source: Untapped.gg. Full branch text may continue on the official detail page.