Void Planter

The Void Planter is a Hardmode Healer spell that is dropped by Coznix, The Fallen Beholder. It creates a purple void seed at the cursor's location, which grows over time for about 10 seconds. When fully grown, a player who touches the void seed will be healed for 50% of the damage of the last hit they took. Up to three void seeds can exist at a time.