Whenever a creature you control attacks alone, it gets +X/+X until end of turn, where X is the number of card types among cards in all graveyards.

Lhurgoyf creatures you control have trample.

Flying

CARDNAME's power is equal to the number of card types among cards in all graveyards and its toughness is equal to that number plus 1.

When CARDNAME dies, target opponent puts a card from their hand on top of their library.

Necrogoyf's power is equal to the number of creature cards in all graveyards.

At the beginning of each player's upkeep, that player discards a card.

Madness (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Trample, myriad (Whenever this creature attacks, for each opponent other than defending player, you may create a token copy that's tapped and attacking that player or a planeswalker they control. Exile the tokens at end of combat.)

Polygoyf's power is equal to the number of card types among cards in all graveyards and its toughness is equal to that number plus 1.

Subgoyf's power and toughness are each equal to the number of different subtypes other than creature types among cards in all graveyards and its toughness is equal to that number plus 1. (Subtypes include but are absolutely not limited to: Plains, Equipment, Aura, Arcane, Jace, Curse, Urza's, Ulamog's, etc.)

Enchant land

Enchanted land has ", : Create a Tarmogoyf token." (It's a Lhurgoyf creature with "Tarmogoyf's power is equal to the number of card types among cards in all graveyards and its toughness is equal to that number plus 1.")