Damage from Confusion [Series III] (Pokemon Japanese Vending | Pokemon Cards) prices are based on the historic sales
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One possibility is to cast Apocalypse, a card that gets rid of everything, including your hand, leaving you only with Barren Glory, but that needs to be done on your upkeep, so there are options like Leyline of Anticipation or Emergence Zone to give these spells flash
Cross Switcher You must play 2 copies of Cross Switcher at the same time
And as a funny little bonus it also lets you give your opponents some mana, which serves both as a negotiation tool as well as a way to deal some extra damage each turn
Sundering Eruption/ Volcanic Fissure For three, you would think Sundering Eruption could get away with not providing a replacement after destroying a land