hidden arsenal yugioh card list (TCG) - Set Flood the field with the army of the Ice Barrier Hidden Arsenal | Yu-Gi-Oh! Wiki

As proliferate is an incredibly flexible mechanic capable of interacting with any type of counter, Atraxa can be used to add additional loyalty counters to planeswalkers or improve creatures through additional +1/+1 counters.

Priced at 10 per card (no minimum card requirements!) with an option to add 'colour match' (the grading label matches the colour scheme of the encased card) for 1 per card, or an ACE Label (the grading label includes unique elements also found on the encased card, examples below) for 3

They are the heavily played Sign in Blood effects of this ability in Red

TM018 Thief 60 100 25 -- The user attacks and steals the target's held item simultaneously

It beautifully illustrates their journey