Hand
1. A zone. A player’s hand is where that player holds cards he or she has drawn but not played yet.
2. All the cards in a player’s hand.
See rule 402, "Hand."

Hand Modifier
A characteristic that only vanguards have. See rule 209, "Hand Modifier."

Haste
A keyword ability that lets a creature ignore the "summoning sickness" rule. See rule 702.10, "Haste," and rule 302.6.

Haunt
A keyword ability that exiles cards. A card exiled this way "haunts" a creature targeted by the haunt ability. See rule 702.52, "Haunt."

Hidden Zone
A zone in which not all players can be expected to see the cards’ faces. See rule 400.2. See also Public Zone.

Hideaway
A keyword ability that lets a player store a secret card. See rule 702.72, "Hideaway."

Horsemanship
A keyword ability that restricts how a creature may be blocked. See rule 702.28, "Horsemanship."

Hybrid Card
A card with one or more hybrid mana symbols in its mana cost. See rule 202.2d.

Hybrid Mana Symbols
A mana symbol that represents a cost that can be paid in one of two ways. See rule 107.4.