Caiden, Festival's Flames

: When Caiden, Festival's Flames activates a loyalty ability, he becomes a 4/4 Dragon creature with flying and indestructible until end of turn.
+2: You may discard a card. If you do, Caiden, Festival's Flames deals damage to target creature equal to the discarded card's mana value.
-5: Search your library for a Dragon creature card, put it onto the battlefield, then shuffle. It gains haste until end of turn.