Abundance [Urza's Saga] Shapeshifter Ally and what to do when

and what to do when either goes wrong

Set: Eldritch Moon Type: Creature — Eldrazi Horror Rarity: Rare Cost: {3} You may cast Eternal Scourge from exile

Set: Mirage Type: Legendary Creature — Human Soldier Rarity: Rare Cost: {3}{W}{W} {T}: Destroy target attacking or blocking Dragon

Set: Fourth Edition Type: Sorcery Rarity: Rare Cost: {R} Each player shuffles the cards from their hand into their library

Abundance [Urza's Saga] Shapeshifter Ally and what to do whenSet: Urza's Saga Type: Enchantment Rarity: Rare Cost: {2}{G}{G} If you would draw a card, you may instead choose land or nonland and reveal cards from the top of your library until you reveal a card of the chosen kind. Put that card into your hand and put all other cards revealed this way on the bottom of your library in any order.