Budget Alternatives to Serpent of Yawning Depths

Evil Eye of Orms-by-Gore $0.10 4B · Eye Non-Eye creatures you control can't attack. Assassin Den $0.11 3U · Wall Defender Manta Ray $0.12 1UU · Fish This creature can't attack unless defending player controls an Island. Tatsunari, Toad Rider $0.19 2B · Human Ninja Whenever you cast an enchantment spell, if you don't control a creature named Keimi, create Keimi... Departed Deckhand $0.21 1U · Spirit Pirate When this creature becomes the target of a spell, sacrifice it. Nick Valentine, Private Eye $0.26 2U · Synth Detective Nick Valentine can't be blocked except by artifact creatures. Long River Lurker $0.26 2U · Frog Scout Ward {1} Evie Frye $0.27 1U · Human Assassin Partner with Jacob Frye Hish of the Snake Cult $0.31 2BGU · Snake Nagas and Serpents you control are Snakes. Slinn Voda, the Rising Deep $0.32 6UU · Leviathan Kicker {1}{U} Detective of the Month $0.36 2U · Human Detective Ascend Whelming Wave $0.68 2UU · Sorcery Return all creatures to their owners' hands except for Krakens, Leviathans, Octopuses, and Serpents. Guile $0.81 3UUU · Elemental Incarnation This creature can't be blocked except by three or more creatures. Midnight Pathlighter $0.90 2WU · Human Wizard Creatures you control can't be blocked except by legendary creatures.