It looks like hes crashed his inkrunner, now he needs to get away from someone
In addition, more expensive cards may be those dedicated to specific events or issued at festivals, tournaments, and shows
Dont forget, you want your opponent to waste resources to get him off the field, because you easily can win in a grind game with a full Artifact backrow
The biggest difference is that ultra rare cards are in a league of their own, in the sense that they are a different type of card all together
Azure Beastbinder Greasefang, Okiba Boss Ink-Eyes, Servant of Oni Insatiable Frugivore Karumonix, the Rat King Lord Skitter, Sewer King Marrow-Gnawer Nashi, Moon's Legacy Nashi, Searcher in the Dark Nezumi Shortfang Pack Rat Rat Colony Rat King, Pale Piper Rat King, Verminister Splinter & Leo, Father & Son Splinter, Aging Champion Splinter, Radical Rat Tangled Colony Vren, the Relentless Wave of Rats Wick, the Whorled Mind