Voryllium Implants

Whenever a creature you control with a
toughness 4 or greater enters the battlefield
under your control, put a +1/+1 counter on it. It smuggles. (To smuggle, exile the top card of your
library. When this permanent leaves the battlefield,
put that card into your graveyard. As long as it is
exiled, you may play the card)
The former specimens were far to small and fragile to survive the upgrades, so Ravot bioengineers looked to
more substantial vessels.