Not too surprised to see Rayquaza (my 2nd place) at the very top
Spell mastery - If there are two or more instant and/or sorcery cards in your graveyard, put up to two creature cards from among the revealed cards into your hand instead of one
There are plenty of Reserved List cards that could be printed todayin fact, theyd be bulk rares if they were
Cave of Darkness The Cave of Darkness is a late-game dungeon you head to in order to obtain the event item 'Earth Fang', and it is a dungeon packed with the worst aspects of the Famicom era: most trash mobs split when attacked, the path is incredibly long, there are many hidden passages, and naturally, you cannot save halfway through
As well, once Ovinomancer was active, it was nigh-unkillable itself, since returning it to your hand is part of the cost and not effect
With Predatory Sliver, however, you can turn your little army into a big one