Heres the shortest version of this guide: Want the best chase card
Whenever a creature you control of the chosen type enters or attacks, draw a card
Then, use Bright Castle and get it on water, sea, or anything else wet and attack
This makes it a big threat that has to be answered unless the opponent wants to slowly lose their Monsters
Red-White Creatures (19) Cloud, Planet's Champion Cloudbound Moogle x2 Coeurl x2 Dwarven Castle Guard x4 Adelbert Steiner G'raha Tia Rosa, Resolute White Mage Beatrix, Loyal General Item Shopkeep x3 Freya Crescent Barret Wallace Lightning, Security Sergeant Instants (5) Fate of the Sun-Cryst x2 Slash of Light x2 Judgment Bolt Artifacts (9) White Auracite x2 White Mage's Staff Dragoon's Lance Samurai's Katana x2 Warrior's Sword x2 Ultima Weapon Sorcery (2) Lands (25) Rabanastre, Royal City x4 Plains x13 Mountain x8 Red and white decks are rarely shy about how they plan to win
Between greens great ramp auras and blues removal suite of auras, you have a solid basis of answers that will trigger Eutropia and get you rolling