Spend this mana only to cast an instant or sorcery spell or to gain a Class level.": Level 3 you cast an instant or sorcery spell, that spell deals damage to each opponent equal to the number of instant and sorcery spells you've cast this turn
(9/22/2011) As the ability resolves, you'll shuffle Elixir of Immortality into its owner's library directly from the battlefield, if it's still there
They hold up to 30 minutes of shuffling without a problem, and pretty much every sleeve still looks brand new
The average price lumps together different conditions and sometimes different versions of a card
This sets up perfectly for the finishing combo of Card Destruction + Serial Spell, which will cause the opponent to draw 20 cards or more, ending the game in deckout
At the time, I thought this was a reasonably fair exchange and I loved been able to play Yu-Gi-Oh