mtg.wtf

O-Naginata can be attached only to a creature with power 3 or greater.
Equipped creature gets +3/+0 and has trample.
Equip {2}

As long as it's not your turn, tapped creatures you control have hexproof.

When Oaken Brawler enters the battlefield, clash with an opponent. If you win, put a +1/+1 counter on Oaken Brawler.

Whenever you crank Oaken Power Suit, target creature gets +X/+X until end of turn, where X is the greatest power among creatures you control.

Flying, vigilance
{T}: Add {U}. Spend this mana only to cast an artifact spell or activate an ability of an artifact source.

Enchant creature
Enchanted creature gets +3/+3.

Vigilance, trample

This spell costs {2} less to cast if an opponent controls a green permanent.
Deathtouch
Whenever Oakhame Adversary deals combat damage to a player, draw a card.

{T}: Creatures you control get +1/+1 until end of turn.

Constellation — Whenever Oakheart Dryads or another enchantment enters the battlefield under your control, target creature gets +1/+1 until end of turn.

You may cast Oakshade Stalker as though it had flash if you pay {2} more to cast it.
Daybound

{2}{G}, {T}, Sacrifice Oashra Cultivator: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

{T}: Prevent the next 1 damage that would be dealt to target creature this turn.

When Oasis Gardener enters the battlefield, you gain 2 life.
{T}: Add one mana of any color.

{T}: Add one mana of any color.
{T}, Exert Oasis Ritualist: Add two mana of any one color.

When Oath of Ajani enters the battlefield, put a +1/+1 counter on each creature you control.
Planeswalker spells you cast cost {1} less to cast.

When Oath of Chandra enters the battlefield, it deals 3 damage to target creature an opponent controls.
At the beginning of each end step, if a planeswalker entered the battlefield under your control this turn, Oath of Chandra deals 2 damage to each opponent.

At the beginning of each player's upkeep, that player chooses target player who controls more creatures than they do and is their opponent. The first player may reveal cards from the top of their library until they reveal a creature card. If the first player does, that player puts that card onto the battlefield and all other cards revealed this way into their graveyard.

I — Create two 1/1 white Human Soldier creature tokens.
II — Create two 2/2 red Human Knight creature tokens with trample and haste.
III — Put an indestructible counter on up to one target Human. You become the monarch.

At the beginning of each player's upkeep, that player chooses target player whose graveyard has fewer creature cards in it than their graveyard does and is their opponent. The first player may return a creature card from their graveyard to their hand.

When Oath of Gideon enters the battlefield, create two 1/1 white Kor Ally creature tokens.
Each planeswalker you control enters the battlefield with an additional loyalty counter on it.

When Oath of Jace enters the battlefield, draw three cards, then discard two cards.
At the beginning of your upkeep, scry X, where X is the number of planeswalkers you control.

When Oath of Kaya enters the battlefield, it deals 3 damage to any target and you gain 3 life.
Whenever an opponent attacks a planeswalker you control with one or more creatures, Oath of Kaya deals 2 damage to that player and you gain 2 life.

At the beginning of each player's upkeep, that player chooses target player who controls more lands than they do and is their opponent. The first player may search their library for a basic land card, put that card onto the battlefield, then shuffle.

When Oath of Liliana enters the battlefield, each opponent sacrifices a creature.
At the beginning of each end step, if a planeswalker entered the battlefield under your control this turn, create a 2/2 black Zombie creature token.