Rhaegar, Last Dragon

Reach, Menace
When Rhaegar enters the battlefield, put three Prophecy counters on him. Remove one Prophecy counter each turn. When there are no prophecy counters on Rhaegar, put a 2+/2+ counter on him.
Take The Throne - Claimant 1 -
If Rheagar kills Robert, Demon Of The Trident, Rhaegar takes the Iron Throne.