Budget Alternatives to Donatello, Rad Scientist

Intrusive Packbeast $0.02 4W · Beast Vigilance Roiling Waters $0.05 5UU · Sorcery Return up to two target creatures your opponents control to their owners' hands. Twisted Riddlekeeper $0.09 8 · Eldrazi Sphinx Emerge {5}{C}{U} Rime Chill $0.11 6U · Instant Vivid — This spell costs {1} less to cast for each color among permanents you control. Aerith Rescue Mission $0.14 3W · Sorcery Choose one — Referee Squad $0.14 2U · Homunculus Convoke Succumb to the Cold $0.15 2U · Instant Tap one or two target creatures an opponent controls. Donatello, Turtle Techie $0.16 3U · Mutant Ninja Turtle When Donatello enters, if you control an artifact, draw a card. Out Cold $0.18 3U · Instant This spell can't be countered. Crashing Wave $0.20 UU · Sorcery As an additional cost to cast this spell, waterbend {X}. Sharae of Numbing Depths $0.21 2WU · Merfolk Wizard When Sharae enters, tap target creature an opponent controls and put a stun counter on it. Summon: Shiva $0.22 3UU · Saga Elemental I, II — Heavenly Strike — Tap target creature an opponent controls. Subjugator Angel $0.22 4WW · Angel Flying Suppression Ray // Orderly Plaza $0.25 Sorcery // Land Tap all creatures target player controls. Lost in the Maze $0.32 XUU · Enchantment Flash Fear of Sleep Paralysis $0.32 5U · Nightmare Flying Monstrosity of the Lake $0.42 4U · Kraken When Monstrosity of the Lake enters, you may pay {5}. Ultimecia, Temporal Threat $0.52 4UU · Human Warlock When Ultimecia enters, tap all creatures your opponents control. Scroll of Isildur $0.60 2U · Saga I — Gain control of up to one target artifact for as long as you control this Saga. Floodpits Drowner $0.71 1U · Merfolk Flash