Telchref, Hacz Eternal

Eminence—While Telchref, Hacz Eternal is in
the command zone or on the battlefield when a
Dragon dies exile it, Telchref, Hacz Eternal gains
all keywords from dragons exiled this way for the remainder of the game. Telchref, Hacz Eternals
power and toughness are equal to the total power
and toughness among creatures exiled this way
When casting Telchref, Hacz Eternal you must
spend {1} mana for each keword attached to
Telchref, Hacz Eternal