Kaalia herself is relatively weak all things considered, shes a four-mana 2/2 creature with flying
Cards like Academy Manufactor, Tamiyos Journal, and Five Hundred Year Diary seem like good cards to include that specifically care about Clue tokens
As the Pokmon franchise continues to evolve and new generations discover these iconic cards, the most valuable examples will likely remain coveted treasures for decades to come
Mila, Crafty Companion / Lukka, Wayward Bonder Mila, Crafty Companion grows your planeswalkers whenever opponents attack them and also draws you cards when your permanents are targeted
Tip: look for 'Acid-Free' and 'Soft-Backed' in the descriptions while shopping around
This actually makes Myrkul quite strong in conjunction with a handful of cards from Shadowmoor