Sending a Lava Spike every turn for two mana with a significant chance of dealing more damage or getting rid of an annoying permanent
You have to cast Festival on an opponents upkeep, which immediately makes it harder to cast than Moment of Silence
When the last is removed, you may cast it without paying its mana cost.) Instant Wave of Terror Cumulative upkeep (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.) At the beginning of your draw step, destroy each creature with mana value equal to the number of age counters on this enchantment
These actions are often abbreviated as DEBT to easily remember them
Lantern of Insight is a great way to look at the top card of everyones deck, letting you plan out what big spell you can cast to guarantee a copy
I dont know if its the best card overall, but considering the price tag of this card and that it wasnt reprinted outside of a Commander set, people will certainly rejoice when seeing all the different versions of this card in booster packs