So Pokmon TCG sets in recent years have been built of your regular cards with the small window of art, Double Rares that are either the older basic Vs or the more recent basic ex cards, Ultra Rares which tend to be more elaborate V/ex arts or full-art Trainer cards, then the desirable Illustration Rares (IR) which are full-art cards depicting Pokmon in their environment, followed by Special Illustration Rares (SIR) which also full-art, but mostly far more elaborately detailed
Their setup stalls immediately
That alone would be very good, but it has another aspect to it: It can target your opponents creatures too
In terms of Reserved List cards, you need somewhere between three and eight dual lands or perhaps a playset of another land or mana accelerator
Articuno is said to live in snowy mountains riddled with permafrost. Attacks Frigid Fluttering Search your deck for up to 2 Basic Water Energy cards and attach them to this Pokmon
Its important to know that these are rough estimates