Read rules for Engineered Explosives
Sunburst (This artifact enters with a charge counter on it for each color of mana spent to cast it.)
, Sacrifice this artifact: Destroy each nonland permanent with mana value equal to the number of charge counters on this artifact.
, Sacrifice this artifact: Destroy each nonland permanent with mana value equal to the number of charge counters on this artifact.
(At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)
Whenever an opponent casts a noncreature spell, you may draw a card unless that player pays 
.
, Remove a counter from a permanent you control: Choose one —
• Put a charge counter on target artifact.
• Put a +1/+1 counter on target creature.