Wurm Tempest

As an additional cost to cast this spell, if it wasn't
cast from your hand, flip five coins. Otherwise,
flip three coins. For each flip you lose, sacrifice a
land.
Create an emblem with ''At the beginning of
combat on your turn, flip a coin. If you win the
flip, create a 5/5 red Wurm creature token with
haste. Otherwise, tap all Wurms you control.''
Flashback {2}{r}{r}{r}