Budget Alternatives to K-9, Mark I

Coralhelm Guide $0.08 1U · Merfolk Scout Ally {4}{U}: Target creature can't be blocked this turn. Wormhole Serpent $0.08 4U · Serpent {3}{U}: Target creature can't be blocked this turn. Dreadlight Monstrosity $0.09 4UU · Crab Horror Ward {2} Amphin Pathmage $0.10 3U · Salamander Wizard {2}{U}: Target creature can't be blocked this turn. Tidal Terror $0.11 4UU · Octopus Whenever this creature attacks, you may tap two other untapped creatures you control. Passwall Adept $0.12 1U · Human Wizard {2}{U}: Target creature can't be blocked this turn. Departed Deckhand $0.21 1U · Spirit Pirate When this creature becomes the target of a spell, sacrifice it. Deepfathom Skulker $0.22 5U · Eldrazi Devoid Suspicious Bookcase $0.25 2 · Wall Defender Long River Lurker $0.26 2U · Frog Scout Ward {1} Merfolk Sovereign $0.29 1UU · Merfolk Noble Other Merfolk creatures you control get +1/+1. Martha Jones $0.29 2U · Human Cleric Woman Who Walked the Earth — When Martha Jones enters, investigate. Ethereal Usher $0.29 5U · Spirit {U}, {T}: Target creature can't be blocked this turn. Kaseto, Orochi Archmage $0.39 1GU · Snake Wizard {G}{U}: Target creature can't be blocked this turn. Star Whale $0.51 6UU · Alien Whale Flying, vigilance Kappa Cannoneer $0.55 5U · Turtle Warrior Improvise Waterbender Ascension $0.61 1U · Enchantment Whenever a creature you control deals combat damage to a player, put a quest counter on this ench...