"Kairyu-Shin's Dark Reef" Rating Score by あんかけ

Can be searched with 《Ocean Dragon Lord - Kairyu-Shin》, play 《Maiden of the Aqua》and 《Electric Jellyfish》or 《Mega Fortress Whale》to protect the Ocean Dragon Lord, or activate when the Ocean Dragon Lord or the sea is eliminated, and the second Ocean Dragon Lord and a shrine maiden to maintain the effect of restricting the deployment of the Ocean Dragon Lord. In addition, 3 water vanillas can be deployed, and if you call 3 Frostosaurus, the total RBI is 7800. WATER Even though it's bound, there's a decent degree of freedom in deployment thanks to the white toki and shark.
However, Physalia can be discarded, and although Water Vanilla is somewhat similar to 《Fish Sonar》, it is difficult to require a large number of undrawn cards for operation. If used in combination with 《Dive Sea Surprise II》, which can be treated as the sea separately from the Field Spell, or 《Sea Stealth Attack》, which can reactivate the sea that went to GY at a cost, the sea can be maintained even after activating this card without spending Maiden of the Aqua. I can afford both Physalia and Mega Fortress Whale. In addition to 《A Legendary Ocean》and Ocean Dragon Lord, the number of required cards is increased, and the power of the submarine surprise attack is not high, but it is not a good idea to aim for such an upside. However, I would like to include one for Maiden of the Aqua.
There are 《Fury of Kairyu-Shin》and 《Rage of Kairyu-Shin》cards that can be searched from Ocean Dragon Lord and can be used without drawing loss cards. Since is the top, is it a card that should be used even if it is a draw loss card?