: Add one mana of any color in your commander's color identity.

Choose one —

• Counter target noncreature spell.

• Conjure a duplicate of target creature card in an opponent's graveyard into your hand. It perpetually gains "You may spend mana as though it were mana of any color to cast this spell."

If there are five or more mana values among cards in your graveyard, draft a card from Bind to Secrecy's spellbook.

When Elsewhere Flask enters the battlefield, draw a card.

Sacrifice Elsewhere Flask: Choose a basic land type. Each land you control becomes that type until end of turn.

<i>Aberrant Tinkering</i> — When Grell Philosopher enters the battlefield and at the beginning of your upkeep, each Horror you control gains all activated abilities of target artifact an opponent controls until end of turn. You may spend blue mana as though it were mana of any color to activate those abilities.

Improvise <i>(Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for .)</i>

Flying

At the beginning of your end step, each opponent discards a card.

, Sacrifice an artifact: Target creature gets -2/-2 until end of turn.

<i>Ceremorphosis</i> — When Illithid Harvester enters the battlefield, turn any number of target tapped nontoken creatures face down. They're 2/2 Horror creatures.

, , Exile Perilous Vault: Exile all nonland permanents.

Equipped creature has deathtouch.

Whenever equipped creature deals combat damage to a player, that player loses half their life, rounded up.

Equip

At the beginning of combat on your turn, mill a card. When you do, if there are four or more creature cards in your graveyard, put a +1/+1 counter on target creature you control and it gains deathtouch until end of turn. <i>(To mill a card, put the top card of your library into your graveyard.)</i>

Menace <i>(This creature can't be blocked except by two or more creatures.)</i>

When Underdark Explorer enters the battlefield, you take the initiative.

Exile target nonland permanent.