Same goes with graveyard hate, board wipes, removal, etc
I expect foil Mystic Remoras to start off reasonably expensive and begin climbing even higher after months of supply draining out
If you do and you have a character named Anna in play, the chosen character cant ready at the start of their next turn
It works best when copying creatures with strong attack triggers like Grave Titan and Overlord of the Boilerbilges for immediate, devastating value

Aclazotz, Deepest Betrayal Angrath, the Flame-Chained Arbiter of Woe Arterial Flow Ashiok's Adept Bad Deal Bandit's Talent Basilica Bell-Haunt Bite of the Black Rose Bladecoil Serpent Bloodtithe Collector Braids's Frightful Return Braska's Final Aeon Burglar Rat Cackling Fiend Caligo Skin-Witch Cavern Whisperer Cruel Grimnarch Daemogoth Woe-Eater Disinformation Campaign Doomsday Confluence Dream Seizer Elderfang Disciple Elvish Doomsayer Entropic Battlecruiser Every Dream a Nightmare Green Goblin, Back for More Hecteyes Herald of Anguish Hopeless Nightmare Invasion of Amonkhet Junji, the Midnight Sky Kaya, Ghost Assassin Kroxa, Titan of Death's Hunger Let's Play a Game Liliana's Specter Malboro Mind Raker Myojin of Night's Reach Nezumi Informant Nicol Bolas, the Ravager Ninja of the Hand Noxious Toad Phyrexian Espionage Rafter Demon Refurbished Familiar Ripclaw Wrangler Screeching Buzzard Scythe Specter Send in the Pest Siren of the Silent Song Skullslither Worm Spellscorn Coven Spellscorn Coven Squeaking Pie Grubfellows Tasigur's Cruelty The Dark Barony The Eldest Reborn The Kami War The Raven Man The True Scriptures Thoughtrender Lamia Tinybones, Bauble Burglar Unnerve Vicious Rumors Victor, Valgavoth's Seneschal Virus Beetle Words of Waste

Three Visits and Nature's Lore are premium, but cards like Entish Restoration and Harrow are also great as you get two landfall triggers from one card