This magic cake launcher was added with the Haunted Manor Dungeon. It is designed around support and fires a homing cake at allies. If there are no players around, on use, no cake will spawn. The cooldown will still be in effect, though.
The cake fired from the Cake Cannon tracks the target player up to 32 blocks and on impact maxs out the targets saturation allowing for quick healing. Having only a 3 secound cool down makes this item incredibly useful during team based fights.