Your commander has ward {2}. Whenever your commander attacks, put two +1/+1 counters on it. When your commander leaves the battlefield, abandon this scheme.
When you set this scheme in motion, gain control of all nonland permanents your opponents control until end of turn. Untap those permanents. They gain haste until end of turn. Each of them attacks its owner this turn if able.
"Do you see the faces of those you once loved among my legion? You will join them soon."
{1}, {T}: Say the flavor text on a card in your hand. Target opponent guesses that card's name. You may reveal that card. If you do and they guessed wrong, you draw a card.
When you set this scheme in motion, put five +1/+1 counters on a creature you control and it gains flying and vigilance until end of turn. If you control no creatures, instead create a 4/4 colorless Scarecrow artifact creature token with vigilance.
At the beginning of your end step, create a 3/3 black Horror creature token. At the beginning of your opponents' end step, they may sacrifice two creatures of their choice. If they do, abandon this scheme.
You may play an additional land on each of your turns. At the beginning of your end step, if you control six or more lands, draw two cards, then abandon this scheme.
"There is no path here that does not end with me."
At the beginning of your end step, you may put target creature card from an opponent's graveyard onto the battlefield under your control. When a creature put onto the battlefield with this scheme dies, abandon this scheme.
When you set this scheme in motion, create a number of Treasure tokens equal to the number of artifacts and enchantments your opponents control. If they control fewer than four artifacts and enchantments, create four Treasure tokens instead.
When you set this scheme in motion, choose up to three nonland permanents you don't control. Target opponent chooses one of those permanents. You gain control of the rest.
"Your former friends have already sworn themselves to me. Wouldn't you like to join them?"
When you set this scheme in motion, choose one — • Draw two cards. • Until end of turn, whenever you cast an instant or sorcery spell, copy it. You may choose new targets for the copy.
"This House is mine, and all within it are my playthings."
When you set this scheme in motion, each opponent reveals their hand. You may choose a noncreature, nonland card revealed this way and cast it without paying its mana cost.
"Indulge me. Just one spell. One potentially fatal spell gone horribly awry."
Starting intensity 2 Each player sacrifices X creatures and you gain X life, where X is this spell's intensity. All Chorus cards you own intensify by 1.
{T}: Add {G}. {3}{G}, {T}: Look at the top four cards of your library. You may reveal a creature card from among them and put that card into your hand. Put the rest on the bottom of your library in a random order.
Fathomless descent — Each creature card in your graveyard perpetually gets +X/+X, where X is the number of permanent cards in your graveyard. Then return a creature card from your graveyard to the battlefield.
At the beginning of your upkeep, put a spore counter on this creature. Remove three spore counters from this creature: Create a 1/1 green Saproling creature token. Sacrifice a Saproling: You gain 2 life.
All permanents are artifacts in addition to their other types. All cards that aren't on the battlefield, spells, and permanents are colorless. Players may spend mana as though it were mana of any color.
When this artifact enters or is put into a graveyard from the battlefield, you may search your library for a basic land card, reveal it, put it into your hand, then shuffle.
The mycosynth created the groove. The groove created the party.