It might not be Mako Tsunami's signature card, However, this card is a must to get if your planning to build a Water based deck. Once on the top tier list for having its effect unstoppable as long as you have the Umi Field card faced up.
Activate only when a monster is sent from the field to your Graveyard. Select and destroy 1 monster on the field. (You can activate this card during the Damage Step.)
You might not see this card on most of the top tier decks, however, this cards effect is still great as ever. You lose 1 card your opponent lose 1 card, but the element of surprise of this card might cost your opponent to lose momentum.
Black Dragon's Chick
★1/DARK/Dragon/ ATK 800/DEF 500
You can send this face-up card you control to the Graveyard; Special Summon 1 "Red-Eyes B. Dragon" from your hand.