Euru, Acorn Scrounger

Four mana and no immediate visible interaction is too slow for Modern. Unlike Modern role-players such as Endurance, Euru has no supplied low-cost or broadly useful function.

Could be wrong if The missing Chitterspitter text could create a uniquely efficient combo or token engine.

A four-mana creature without supplied immediate disruption or card advantage is an implausible Legacy inclusion; it lacks the efficiency of comparable Legacy creatures such as Endurance.

Could be wrong if Cheap Legacy acceleration or a missing Chitterspitter combo could change the mana-rate assessment.

Squirrel tribal can use both the combat trigger and token-sacrifice theme, but a four-mana 3/3 remains replaceable until the missing forage and Chitterspitter text proves substantial.

Could be wrong if Chitterspitter may provide enough repeatable token production or scaling to make Euru a stronger tribal engine.

The 3/3-for-4 floor is merely replacement-level, but token and graveyard mentions suggest forage may be enabled and its conjured permanent can add value.

Could be wrong if Unknown forage requirements, Chitterspitter text, fixing, and format speed could move it from filler to a strong engine.