Lattice the Runes

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.

: The next time an artifact source of your choice would deal damage to you this turn, prevent that damage.

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