The Calm Before The Storm

Cumulative Upkeep {u}(At the beginning of your
upkeep, if this permanent is on the battlefield, put an
age counter on this permanent. Then you may pay
{u} for each age counter on it. If you don't, sacrifice it.)
When this enchantment enters the battlefield, tap
all creatures
If this card has 5 age counters, transform it
"This storm is going to be big" - Bern, Sailor