Tenacious Tosk

Modern demands immediate value or unusually strong synergy from four-drops. Tosk is only a removable combat body and has no credible competitive shell.

Could be wrong if A new, efficient counter or combat-damage engine could supply a synergy package not represented in the provided context.

Legacy’s cheap interaction and powerful engines leave little room for a four-mana, attack-only threat that creates no value until it hits a player.

Could be wrong if An unprovided Legacy interaction that repeatedly exploits combat-damage counters could create a narrow use.

It can accumulate counters against open multiplayer opponents, but a four-mana 4/4 without protection or immediate value is highly replaceable even in counters decks.

Could be wrong if Counter-multiplying or combat-damage-focused commanders could make the incremental trigger more valuable than expected.

A four-mana 4/4 is a strong baseline, and limiting blocks to one creature helps attacks and enables snowballing, though it still trades with a single large blocker.

Could be wrong if Set speed, removal density, and green’s archetype support are unknown; efficient removal or larger creatures could reduce its value.