The Edge Master

Changeling, Partner, Vigilance, Shroud, Haste, enters the battlefield with a Finality counter

Ready for anything-You may activate any ability on the battlefield as long as you can fulfill their costs.

No restraints-All player's spells cost {3} to cast.

This is Astral Chaos-Whenever any permanent is sent to a graveyard from the battlefield, it is exiled instead.

"Can you defeat this old warrior?"—Edge Master