Her ultimate is less of an ultimate as it is a well-rounded sweeper
Invasion of Segovia is a perfect example: It creates Kraken tokens, so its already synergistic, and it makes fodder for Jalira, but its not a creature card, so this otherwise subpar hit wont ever be the card you find with Jaliras polymorph ability
Mauhur helps grow this army even larger, and a number of cards synergize with the army including Ugluk (grows when the army or any other creatures die), Gothmog (grants the army deathtouch), Moria Marauder (play spells off the top), Sauron (ring tempts, card draw)
Testing to see if a foil card is fake can't be done the same way as a regular card
Considering its one half of an infamous two-card combo, its no wonder theres a good deal of demand