mtg.wtf

Yavimaya Kavu's power is equal to the number of red creatures on the battlefield.
Yavimaya Kavu's toughness is equal to the number of green creatures on the battlefield.

Protection from artifacts

Trample

Enchant creature
You control enchanted creature.
Enchanted creature gets +2/+2 and has trample.

Each land is a Forest in addition to its other land types.

Flying
First strike
At the beginning of your upkeep, you may sacrifice an artifact. If you don't, tap Yawgmoth Demon and it deals 2 damage to you.

{TK}{TK} — When this permanent leaves the battlefield, target player discards a card.
{TK}{TK}{TK}{TK}{TK} — When this permanent leaves the battlefield, create five 1/1 white Clown Robot artifact creature tokens.
{TK}{TK} — 3/3
{TK}{TK}{TK}{TK} — 6/5

You can't cast more than one spell each turn.
You may play lands and cast spells from your graveyard.
If a card would be put into your graveyard from anywhere, exile it instead.

Skip your draw step.
Pay 1 life: Draw a card.

{T}, Pay 2 life: Add {B}{B}.
You may cast spells from your graveyard. Only mana produced by abilities that caused you to lose life may be spent to cast spells this way. (Damage causes loss of life.)
If a card would be put into your graveyard from anywhere, exile it instead.

Whenever an opponent casts a white spell, that player loses 1 life and you gain 1 life.

Until end of turn, you may play face-up cards you own from exile.
If a card would be put into your graveyard or exile from anywhere this turn, put it on the bottom of your library instead.

Until end of turn, you may play lands and cast spells from your graveyard.
If a card would be put into your graveyard from anywhere this turn, exile that card instead.

Each opponent sacrifices a land of their choice.

Whenever Ydwen Efreet blocks, flip a coin. If you lose the flip, remove Ydwen Efreet from combat and it can't block this turn. Creatures it was blocking that had become blocked by only Ydwen Efreet this combat become unblocked.

Horsemanship
Yellow Scarves Cavalry can't block.

Horsemanship
Yellow Scarves General can't block.

Yellow Scarves Troops can't block.

Flying, vigilance, menace
Whenever Yennett, Cryptic Sovereign attacks, reveal the top card of your library. You may cast it without paying its mana cost if its mana value is odd. If you don't cast it, draw a card.

{T}: Target opponent gains control of Yes Man, Personal Securitron. When they do, you draw two cards and put a quest counter on Yes Man. Activate only during your turn.
Wild Card — When Yes Man leaves the battlefield, its owner creates a tapped 1/1 white Soldier creature token for each quest counter on it.

All creatures have haste.
Players play with the top card of their libraries revealed.
Noninstant, nonsorcery cards on top of a library are on the battlefield under their owner's control in addition to being in that library.

When Yeva's Forcemage enters, target creature gets +2/+2 until end of turn.

Flash
You may cast green creature spells as though they had flash.

{2}{G}{G}: Yew Spirit gets +X/+X until end of turn, where X is its power.

When Yggdrasil, Rebirth Engine enters, exile all creature cards from your graveyard.
{T}: Exile the top three cards of your library.
{4}, {T}: Put a creature card exiled with Yggdrasil onto the battlefield under your control. It gains haste until end of turn. Activate only as a sorcery.