Pyrogoyf’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.
Whenever Pyrogoyf or another Lhurgoyf creature you control enters, that creature deals damage equal to its power to any target.
The ability that defines Pyrogoyf's power and toughness works in all zones, not just the battlefield.
07-06-2024
wotc
If Pyrogoyf or the relevant Lhurgoyf creature leaves the battlefield while Pyrogoyf's last ability is on the stack, use its power as it last existed on the battlefield to determine how much damage is dealt.
07-06-2024
wotc
The ability that defines Pyrogoyf's power and toughness counts card types, not cards. If the only card in all graveyards is a single artifact creature card, Pyrogoyf will be a 2/3. If the cards in all graveyards are ten artifact cards and ten creature cards, Pyrogoyf will still be a 2/3.
07-06-2024
wotc
Card types that can appear on cards in a graveyard are artifact, battle, creature, enchantment, instant, kindred, land, planeswalker, and sorcery. Legendary, basic, and snow are supertypes, not card types; Lhurgoyf, Forest, and Siege are subtypes, not card types.
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.