Telekenaul, Void Bridge

This artifact acts like an enchantment.
{t}, Add {b}{b}{b} to your mana pool unless your opponent pays {4}.
When Telekenaul, Void Bridge enters the battlefield, if your opponent can counter this
spell, they must if able.
If Telekenaul, Void Bridge enters the battlefield
from your graveyard you gain 4 life and scry 1.
Flashback, {3}{b}{b}{b}{b} (You may cast this card
from your graveyard for its flashback cost.)