Skithiryx, the Blight Dragon [The List] Badger Clockwork Avian enters the battlefield

Clockwork Avian enters the battlefield with four +1/+0 counters on it

put thirteen +1/+1 counters on Withengar Unbound

Whereas Mishra works in metals and stone

Whenever a creature is put into an opponent's graveyard from the battlefield

{2}{R}: Creatures you control get +1/+0 until end of turn

Skithiryx, the Blight Dragon [The List] Badger Clockwork Avian enters the battlefieldSet: The List Type: Legendary Creature Phyrexian Dragon Skeleton Rarity: Mythic Cost: {3}{B}{B} Flying Infect (This creature deals damage to creatures in the form of 1 1 counters and to players in the form of poison counters.) {B}: Skithiryx, the Blight Dragon gains haste until end of turn. {B}{B}: Regenerate Skithiryx.