Radar Whale

While face up in your Extra Deck: you can discard 1 card; excavate 1 card from the top of your deck; if the excavated card is a WATER or Sea Monster ; send it to the GY and put 2 Sonar Counter on this face-up monster. If not, shuffle the card into the deck and remove 1 Sonar Counter from this monster. While in your monster card zones, the field becomes Umi. [1/turn], you can discard 1 WATER monster; put 1 Sonar Counter on a face up Sonar Monster in your Extra Deck. When this monster is destroyed and sent to the GY, you can target 1 WATER or Sea Monster in your GY, or that are currently banished; Special Summon it. You can only use the effect of cards with this name [1/turn].