@ Ruta & Poker Alho:
1) Quintessence is an off-element buff of a single creature.
2) Antaeu's Rage is a Nighfall-like card & in-element & buffs EVERY Shrieker you play.
3) Shrieker doesn't cost 8
if played via Graboid.
4) Burrow is a more flexible mechanic than immortality. Immortal creatures can't be buffed, except for SoW. Burrowed creatures can be buffed, then burrowed, then be un-burrowed to be buffed again or whatever.
5) There are already good reasons to burrow Devourers|Pests. What is more irritating than a pack of Devourers immune to CC?
Seriously guys, this card is totally broken & I am not biased at all. This won't buff Antlions; it will buff Graboid-Shrieker decks instead and you know it. Just be honest here with yourselves...