Library of Leng [Beta Edition] Common Whenever a creature an opponent

Whenever a creature an opponent controls with a -1/-1 counter on it dies

Set: Mirrodin Besieged Type: Sorcery Rarity: Rare Cost: {X}{G} Search your library for a green creature card with mana value X or less

Set: Eventide Type: Creature — Elemental Rarity: Rare Cost: {1}{B}{B} Wither (This deals damage to creatures in the form of -1/-1 counters

Set: Unlimited Edition Type: Land — Mountain Forest Rarity: Rare ({T}: Add {R} or {G}

but you may put it on top of your library instead of into your graveyard

Library of Leng [Beta Edition] Common Whenever a creature an opponentSet: Beta Edition Type: Artifact Rarity: Uncommon Cost: {1} You have no maximum hand size. If an effect causes you to discard a card, discard it, but you may put it on top of your library instead of into your graveyard.