Grapha, Dragon-Overlord

Flying, Trample, Menace
As an additional cost to cast this spell exile one Grapha, Dark World Dragonlord you control.
Eternal Darkness - {t}{b} Target spell or ability changes to: "Any player controling Grapha, Dragon-Overlord discards one card."
Eternal Dragon - When Grapha, Dragon-Overlord leaves the battlefield, bring target Grapha, Dark World Dragonlord you own from Exile or your graveyard into play, then any player with at least one card in their hand discards one card.