Cards can be challenged if they've quested, so it becomes a sort of tug-of-war balancing act between sending your heavy hitters to get more lore or holding something back to counter an opponent
only an Amethyst/Steel card can be used
For example, if a character has Resist +2, then they will take two less damage when challenged
It usually doesnt work on bosses, but it can make short work of random mobs
For example, if it blocks a 12/12 creature with trample, that creature's controller must assign at least 8 of that creature's combat damage to Diamond Weapon, and the remainder can be assigned to the defending player, planeswalker, or battle
The game beautifully blends accessible gameplay rules with surprisingly deep tactical layers, making it an instant hit for both casual families and hardcore tournament strategists