Combos Utilizing Umbilicus

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Pay 2 mana with Volrath and discard A. Horror, Volrath gains +2+2. At the end of the turn A. Horror comes into play forcing the opponet to discard 2 cards from their hand. For the rest do the math.

Pay a lot of life.Put the Minion token into play.Gain more life.With umbilicusa return it to your hand and play it again paying more life.

use the Umbilicus to return the Tangle Wire to your hand during your upkeep

during you turn, return rising waters to your hand. then leave enough mana to play it at the end of turn. also leave 1 land untaped. during their turn, tap their land and they cant play anything.

play umbilicus, then null chamber. on their turn they can't play the card named, but on your turn just return null chamber to your hand and you can play your card, then toss null chamber back outagain

Play Umbilicus then Marshal and next upkeep dont pay echo, return Marshal to your hand then during your turn cast it again...repeat

Play Umbilicus first and then play Deranged Hermit to get 4 extra 2/2 tokens every turn. Finally play Overrun on your favour.

use the umbilicus to return the Hermit and gain lots o' squirrel tokens. You can also play Umblicus with Bone shredder, Radiant's Dragoons and lots of other creatures.

It may be hard to get out but it will work. Bounce your bridge and you can attack without defense.