At the beginning of each player's upkeep, this enchantment deals damage to that player equal to the number of artifacts they control.

Counter target spell with mana value 2 or less. (Then shuffle this card into its owner's library.)

: Target creature you control gains protection from the color of your choice until end of turn.

Enchant creature

As long as enchanted creature is red, it gets +1/+1 and has double strike. (It deals both first-strike and regular combat damage.)

As long as enchanted creature is green, it gets +1/+1 and has trample.

, : Target attacking creature gets +2/+0 until end of turn. When that creature leaves the battlefield this turn, sacrifice this artifact. If the creature deals damage to a creature this turn, the creature dealt damage can't be regenerated this turn. If a creature dealt damage by the targeted creature would die this turn, exile that creature instead.

Nonland permanent cards in graveyards and libraries can't enter the battlefield.

Players can't cast spells from graveyards or libraries.