Engineered Explosives [Fifth Dawn] 56 Set: Core Set 2021 Type:

Set: Core Set 2021 Type: Legendary Artifact Rarity: Mythic Cost: {7} You may spend mana as though it were mana of any color

1 Soaring Thought-Thief

it produces {B} instead of any other type and amount

where X is the number of Rats you control

Then that player loses all unspent mana and you add the mana lost this way

Engineered Explosives [Fifth Dawn] 56 Set: Core Set 2021 Type:Set: Fifth Dawn Type: Artifact Rarity: Rare Cost: {X} Sunburst (This enters the battlefield with a charge counter on it for each color of mana spent to cast it.) {2}, Sacrifice Engineered Explosives: Destroy each nonland permanent with mana value equal to the number of charge counters on Engineered Explosives.