Dragon Mage

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

Arcane Signet

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

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.

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.

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

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

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