Their Number Is Legion (Surge Foil) [Warhammer 40,000] POP Series 1 if your Leader Card is

if your Leader Card is yellow or a "Slug's Army" card and you discard this card from your hand : Play up to 1 "Slug's Army" card with an energy cost of 1 from your deck

that player may gain 2 life

*Watership Down*

Exile five other cards from your graveyard

Their Number Is Legion (Surge Foil) [Warhammer 40,000] POP Series 1 if your Leader Card isSet: Warhammer 40,000 Type: Sorcery Rarity: Rare Cost: {X}{B}{B}{B}{B} Create X tapped 2 2 black Necron Warrior artifact creature tokens, then you gain life equal to the number of artifacts you control. Exile Their Number Is Legion. You may cast Their Number Is Legion from your graveyard.