If it has been discarded from your hand, milled from your deck, or killed off the battlefield, you need to return it to your hand to have the option for the adventure
We are all familiar with such big boys as Progenitus, Consuming Aberration, Lord of Extinction, Malignus and Serra Avatar, how would Wizards of the Coast make their Kaiju both impressive and interesting enough to get us to buy boxes of Ikroia
They see only vague shapes rustling behind the leaves, which is represented in game by the disguise mechanic, letting all sorts of creatures sneak up on opponents
Advanced Search Sets Random Syntax Ajani's Aid Appendage Amalgam Autumnal Gloom Boseiju Reaches Skyward Bow of Nylea Call of the Wild Cardboard Carapace Cemetery Tampering Chains of Mephistopheles Chronic Flooding Conspiracy Corroding Dragonstorm Court of Cunning Crawling Infestation Crawling Sensation Crop Sigil Curse of Unbinding Curse of the Bloody Tome Deadbridge Chant Death's Oasis Desert Warfare Disturbing Mirth Dredger's Insight Drowned Secrets Duplicity Emergent Haunting Enduring Renewal Enhanced Surveillance Evanescent Intellect Failed Conversion Fear of Death Fear of Impostors Fear of Surveillance Fleeting Memories Foster Fraying Sanity Gideon's Resolve Gift of Compleation Go-Shintai of Lost Wisdom Gravebreaker Lamia Growing Dread Guild Feud Haunted Crossroads Heretic's Punishment Impromptu Raid Infernal Genesis Jace's Erasure Lich Lorehold Excavation Memory Erosion Mindwrack Harpy Mine, Mine, Mine
You can even make it a theft engine with a little help from Conspiracy
ButI worry a little bit about the many situations where you cant really effectively tap your merfolk to get it going and those are definitely going to come up
