Synth Eradicator is a rare Artifact Creature — Synth Soldier card from Fallout (PIP), collector number 67. Current market price: $0.29 (foil $0.69), TCGplayer market prices via Scryfall.
Haste Whenever this creature attacks, exile the top card of your library. You may get {E}{E} (two energy counters). If you don't, you may play that card this turn. {T}, Pay {E}{E}{E}: This creature deals 3 damage to any target.