Ornithopter
Casting Cost:
Flying (This creature can't be blocked except by creatures with flying or reach.)
$ 000
Orim's Chant
Kicker (You may pay an additional White as you cast this spell.)
Target player can't cast spells this turn.
If Orim's Chant was kicked, creatures can't attack this turn.
Order of Whiteclay
, : Return target creature card with converted mana cost 3 or less from your graveyard to the battlefield. ( is the untap symbol.)
Orcish Oriflamme
Attacking creatures you control get +1/+0.
Orcish Artillery
: Orcish Artillery deals 2 damage to target creature or player and 3 damage to you.
Oracle of Nectars
, : You gain X life.
Oracle of Mul Daya
You may play an additional land on each of your turns.
Play with the top card of your library revealed.
You may play the top card of your library if it's a land card.
Oppression
Whenever a player casts a spell, that player discards a card.
Opposition
Tap an untapped creature you control: Tap target artifact, creature, or land.
Opportunity
Target player draws four cards.
Open the Vaults
Return all artifact and enchantment cards from all graveyards to the battlefield under their owners' control. (Auras with nothing to enchant remain in graveyards.)
Opalescence
Each other non-Aura enchantment is a creature in addition to its other types and has base power and base toughness each equal to its converted mana cost.