Kediss, Emberclaw FamiliarutilityBudget$5.86Not a direct unblockable effect, but it similarly turns combat into a guaranteed damage engine by rewarding a board built around one creature connecting. It fits in aggressive counter-based decks that want to force value through combat.
Tetsuko Umezawa, FugitiveutilityBudget$0.13Makes creatures with low power or toughness essentially unblockable, functioning as a comparable evasion enabler for go-wide or counter-based decks. It is often better than it looks in decks with small creatures that grow via counters.
Aqueous FormutilityBudget$0.40Provides repeatable evasion by making a single creature unblockable, which serves a similar finisher role in decks that stack counters on one threat. It also adds scry to improve consistency.
Whispersilk CloakutilityBudget$2.74Grants unblockable to one creature and protects it with shroud, making it a strong combat-based closer for a creature you’ve enhanced with counters. It fills a similar role of converting a big creature into an unavoidable threat.
Rogue's PassageutilityBudget$0.36A land-based evasion source that can make a large countered creature unblockable at instant speed. It is slower than Herald of Secret Streams but very reliable and colorless.
Key to the CityutilityBudget$0.95Gives a creature unblockable on demand, which is a close functional stand-in for pushing damage through with a single large attacker. It also helps loot away excess cards, improving midgame consistency.
Trailblazer's BootsutilityBudget$2.37Provides near-universal unblockability against most board states, especially in multiplayer where nonbasic lands are common. It serves as a budget-friendly finisher enabler for one large creature.
Thassa, God of the SeautilityBudget$3.11Can make a creature unblockable each turn, offering repeated evasion for a tall threat. The scry ability also helps dig toward counter synergies and finishers.