Royal Treatment [Wilds of Eldraine] KSU029-R Lightmine Field deals damage to

Lightmine Field deals damage to each of those creatures equal to the number of attacking creatures

One thorn to warn

you may begin the game with Gemstone Caverns on the battlefield with a luck counter on it

allowing it to operate in perpetuity

Set: Alliances Type: Artifact Rarity: Uncommon Cost: {2} {T}

Royal Treatment [Wilds of Eldraine] KSU029-R Lightmine Field deals damage toSet: Wilds of Eldraine Type: Instant Rarity: Uncommon Cost: {G} Target creature you control gains hexproof until end of turn. Create a Royal Role token attached to that creature. (If you control another Role on it, put that one into the graveyard. Enchanted creature gets +1 +1 and has ward 1.) "Stay your blades, peasants."