Maskwood Nexus (Extended Art) [Kaldheim] Leviathan Whenever one or more land

Whenever one or more land cards are put into your graveyard from anywhere

sacrifice City of Traitors

If you've cycled a card named Yidaro

Locus of Mana gets +1/+1 for each unspent green mana you have

choose up to 1 of your opponent's Battle Cards and it gets -10000 power until the end of your opponent's turn

Maskwood Nexus (Extended Art) [Kaldheim] Leviathan Whenever one or more landSet: Kaldheim Type: Artifact Rarity: Rare Cost: {4} Creatures you control are every creature type. The same is true for creature spells you control and creature cards you own that aren't on the battlefield. {3}, {T}: Create a 2 2 blue Shapeshifter creature token with changeling. (It is every creature type.)