Arcane Signet

{T}: Add one mana of any color in your commander's color identity.

Mountain

Adamaro's power and toughness are each equal to the number of cards in the hand of the opponent with the most cards in hand.

This creature has first strike during your turn.
Whenever an opponent draws a card, this creature deals 1 damage to them.

Flying
Whenever this creature deals combat damage to a player, each player discards their hand, then draws seven cards.

{T}: Add one mana of any color in your commander's color identity.
Sacrifice this artifact: Draw a card.

{1}{R}, {T}, Sacrifice this creature: Each player discards their hand, then draws seven cards.

Psychosis Crawler's power and toughness are each equal to the number of cards in your hand.
Whenever you draw a card, each opponent loses 1 life.