One of the miscellaneous secondary weapons is the teddy bear. Locate it
after earning the Scorpion Sword in the clock (west) tower. There are
three encounters with a giant golem enemy in the clock tower when you
initially go through it; the first is before you start negotiating the
vertical climbing of the tower (past); the second is atop the clock
tower (past); the third is is stationary and throws exploding monsters
in the clock tower's second area (past).

Look for the room where the second giant golem enemy is. You will need
to be in the present (so find a time portal) and drop into the
water-filled dead end past the golem's room. Break the wall and retrieve
the teddy bear.

The teddy bear is almost unbreakable and does almost no damage, but has
the ability to restore lost life to the Prince with each successful blow
on an enemy.