mtg elf tribal cards otag:tribal-elf · Scryfall Magic: The Gathering Search Put a 1/1 green Elf Warrior creature token onto the battlefield for each Elf you control. Elf Deck Mtg Lathril, Blade

It deals 13 damage to each creature in play for a staggering nine mana, but that cost is reduced by one for each creature in play

Well, a Planechase card, or oversized MTG, card is essentially two cards laying sideways, put together

the second is that there's no 'once per turn' limit or other tax on his draws

Something along the line of a scannable code on cards to verify authenticity would get the job done, but implementing the program would be costly, and it wouldn't help with all the cards that are currently in print (barring some sort of mass-exchange program, which would be even more prohibitively expensive)