Example #4: Destruction in a Chain of "Premature Burial."
Step 1: Player A activates "Premature Burial" with intent to revive a monster. Player A pays 800 Life Points at this time.
Step 2: Player B activates "Mystical Space Typhoon" to destroy "Premature Burial."
(neither player wishes to activate additional steps)
(resolve in reverse order)
Step 2 resolves: "Mystical Space Typhoon" destroys "Premature Burial."
Step 1 does not resolve because "Premature Burial" was destroyed, and, as a Continuous Spell Card, relies on the card continuing to be in play in order to achieve its effect. Its effect "disappears" and no monster is revived. There is no refund of Life Points because they have already been paid.
"Mystical Space Typhoon" and "Dust Tornado" do not negate the effects of cards they destroy. So Spell and Trap Cards that "Mystical Space Typhoon" is chained to may still resolve if they are in the Graveyard. However the effects of Continuous and Equip Cards need to remain on the field to resolve, so their effects are not applied if they are destroyed.