Recovery

Recovery is way of returning cards from specific game areas into others, generally into your hand, but also your Battle Zone or Shield Zone.

Types of Recovery by Zone
Graveyard
 * Graveyard to Hand: (Alshia, Spirit of Novas, Chief De Baula, Machine King of Mystic Light, Dark Reversal)
 * This is also known as Salvage.
 * Graveyard to Mana Zone: (Ochappi, Pure Hearted Faerie, Grateful Life, the Earth Breaker)
 * Graveyard to Battle Zone (Inferno Sign, Babelginus, Demonic Dragon, Light Gate)
 * This is also known as Reanimate.

Mana Zone
 * Mana Zone to Hand (Thrash Crawler, Kabra Katabra)
 * Mana Zone to Battle Zone (Crest of Mother, Savage Earth)
 * Mana Zone to Shield Zone (Mana Nexus)

Shield Zone
 * Shield Zone to Hand (Emeral, Benzo, the Hidden Fury, Kodamanma, Gil Gil Puppet)

Battle Zone
 * Battle Zone to Hand (Aqua Surfer, Spiral Gate)
 * This is also known as Bounce.

Significance
In order to deal with interference from your opponent (such as Creature, Hand or Mana destruction) or to re-use cards.
 * Cards that are placed on the bottom of the deck are fairly impossible to recover from, without specific cards such as Logic Cube or Crystal Memory to search for them directly.
 * Due to the disadvantage of losing mana, cards that return cards from your mana zone to hand is usually seen as a disadvantage.
 * With the usages of cards such as Bliss Totem, Avatar of Luck and Mystic Dreamscape, cards can be moved from the Graveyard to Mana Zone to the Hand.