
AmassAmassPut a +1/+1 counter on an Army you control. It's also an Orc. If you don't control an Army, create a 0/0 black Orc Army creature token first. Orcs X. MillMillPut that many cards from the top of a library into its owner's graveyard. X cards. You may cast an instant or sorcery spell with mana valuemana valueTo amass Orcs X, put X +1/+1 counters on an Army you control. It's also an Orc. If you don't control an Army, create a 0/0 black Orc Army creature token first. X or less from among them without paying its mana cost. (To amass Orcs X, put X +1/+1 counters on an Army you control. It's also an Orc. If you don't control an Army, create a 0/0 black Orc Army creature token first.)
FlashbackFlashbackYou may cast this card from your graveyard for its flashback cost. Then exile it.—, Exile X cards from your graveyard.
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Read from the rules text. A card that enables a keyword makes or is the thing; a card that rewards it gets better when you have it. Two cards interact when one enables what the other rewards.