rarest cards to get in pokemon tcg pocket New Pokémon Sun & Moon set has one card that will rewrite the meta Is this considered the rarest

This is very very good

Given the low cost and the trigger for a +1/+1 counter being quite generous, this has all the makings of a very dangerous early-game card that could contribute to quite a few quick wins if your opponent can't deal with it and remove it from the battlefield within one or two turns.

Secondly, replacement effects are extremely volatile in their own right, particularly when they replace something as open-ended and common as drawing a card. Im sure nobody at WotC thought through the future implications of Cathartic Reunion, discard Grave-Troll, dredge 18 during Ravnica design, and its not realistic to expect them to

Hitting any card, taking zero damage, and adding surveil 1 for a minor cost increase is well worth it

Borborygmos Edric Upgrades: all the extra turn spells, Spellstutter Sprite, all the good super cheap countermagic like Fierce Guardianship, and all the mana-fixing untapped lands