Elvish Archers [Collectors' Edition] Commander Masters you may search your library

you may search your library for a card

Whenever a card is put into an opponent's graveyard from anywhere

Set: Magic Player Rewards 2006 Type: Creature — Specter Rarity: Rare Cost: {1}{B}{B} Flying

Prime Sentinels learn from every encounter with an enemy and make the data available to other Sentinels

And in the end

Elvish Archers [Collectors' Edition] Commander Masters you may search your librarySet: Collectors' Edition Type: Creature Elf Archer Rarity: Rare Cost: {1}{G} First strike I tell you, there was so many arrows flying about you couldn't hardly see the sun. So I says to young Angus, "Well, at least now we're fighting in the shade!"