Envirus

Sustain 4 (This card gets 4 counters. Whenever you
are dealt damage, remove one. If there are none,
remove it from the game).
Whenever you cast a blue instant or sorcery with converted mana cost X or less, copy it and cast
the copy without paying its mana cost where X
is the amount of Sustain counters on this card.
{t}: Add {u}{u} to your mana pool.