mtg.wtf

[+1]: Reveal the top card of your library. If it's a land card, put it onto the battlefield. Otherwise, put it into your hand.
[–2]: Create Ashaya, the Awoken World, a legendary 4/4 green Elemental creature token.
[–7]: Untap up to six target lands. They become 6/6 Elemental creatures. They're still lands.

O-Kagachi Made Manifest is all colors.
Flying, trample
Whenever O-Kagachi Made Manifest attacks, defending player chooses a nonland card in your graveyard. Return that card to your hand. O-Kagachi Made Manifest gets +X/+0 until end of turn, where X is the mana value of that card.

Whenever Odious Witch attacks, defending player loses 1 life and you gain 1 life.

As this creature transforms into Olag, Ludevic's Hubris, it becomes a copy of a creature card exiled with it, except its name is Olag, Ludevic's Hubris, it's 4/4, and it's a legendary blue and black Zombie in addition to its other colors and types. Put a number of +1/+1 counters on Olag equal to the number of creature cards exiled with it.

Old-Growth Grove enters tapped.
{T}: Add {B} or {G}.

Ondu Skyruins enters tapped.
{T}: Add {W}.

At the beginning of each upkeep, if a player cast two or more spells last turn, transform One of the Pack.

Living metal
Trample
Whenever you attack, bolster 2. The chosen creature gains trample until end of turn. When that creature deals combat damage to a player this turn, convert Optimus Prime.

Whenever Order of the Alabaster Host becomes blocked by a creature, that creature gets -1/-1 until end of turn.

Orderly Plaza enters tapped.
{T}: Add {W} or {U}.

Flying, lifelink, indestructible, haste

Flying, trample, lifelink
Sacrifice another creature: Draw a card.

Flying
Whenever Oteclan Levitator attacks, target attacking creature without flying gains flying until end of turn.

{1}, {T}, Sacrifice Overloaded Mage-Ring: Copy target spell you control. You may choose new targets for the copy.

Pelakka Caverns enters tapped.
{T}: Add {B}.

Flying

Skulk
When Persistent Nightmare deals combat damage to a player, return it to its owner's hand.

Flying, haste

{T}: Add {W}.

Menace

Reach, lifelink
Whenever Polukranos, Engine of Ruin or another nontoken Hydra you control dies, create a 3/3 green and white Phyrexian Hydra creature token with reach and a 3/3 green and white Phyrexian Hydra creature token with lifelink.

Creature tokens you control lose all abilities and have base power and toughness 3/3.
At the beginning of your upkeep, you may transform Poppet Factory.

Portrait of Michiko gets +1/+1 for each artifact and/or enchantment you control.

Flying
At the beginning of each opponent's upkeep, if that player has two or fewer cards in hand, Prickle Faeries deals 2 damage to them.

{T}: Add one mana of any color. When that mana is spent to cast an instant or sorcery spell, copy that spell and you may choose new targets for the copy.