The Fall of Alengar

When The Fall of Alengar enters the battlefield,
each player gains a calamity counter.
Whenever a player casts an instant, sorcery, or enchantment, that player gains a calamity counter
Sacrifice The Fall of Alengar: Each player
sacrifices an amount of permanents equal to the
amount of calamity counters they have. Any
player may activate this ability.