also if i use its ability on itself before quintessencing it, i made it immune to the last two cards you mentioned...
Same thing happens if you cast momentum on it. Your argument is weak.
it's funny how i explained you how to make a creature unremovable, you found another way to make it unremovable and thus my argoument is weak!
(also your way involves ONE MORE CARD, while my way uses the very same card's ability)
LOL!!
i am sorry, it's my opinion that in a card game NOTHING should be UNREMOVABLE, this is a cardinal concept i have in every game that involves strategy.
that's why i am against protected artifacts too.. and expecially shields that comes into play immortal. I have a deck that revolves around charging a fire lance and you play a mirror shield costing 2 white quanta and i am forced to auto quit because in NO WAY i can accomplish the idea of my deck? it's ridicolous!
as i explained before: my point was not demostrating this card is OP, but asking WHY should it be THAT poweful.. the "immortalty" was not the final purpose of the card, it was just an addon to make it super powerful.
if you added the "hp cannot go down" ability just for "lore" to sinergize with the Nadir card, i suggest you find a less powerful way to create this sinergy