Spellswarm Husher

Affinity for Faeries (This spell costs {1} less to cast
for each Faerie you control.)
Storm (When you cast this spell, copy it for each
spell cast before it this turn. The copies enter the battlefield as tokens.)
Flash, flying
When Spellswarm Husher enters the battlefield, counter target spell with converted mana cost X
or less, where X is the number of spells on the
stack named Spellswarm Husher.