This is definitely a strong combo considering all of the other stock Isolde combos require 2 cards in hand to pull off
In some decks, you also want to speed up the way you lose life, like with Death's Shadow, so thats another interesting application
My recommendation is to follow these instructions: 1-20 Sleeve and store in a side-loading binder 20-100 Sleeve, toploader, and secure storage 100+ Sleeve, toploader, and dedicated secure storage Grails / highly valuable cards Sleeve, toploader, and eventually a graded slab If you dont have a standard transparent penny sleeve at hand, every modern ETB offers a selection of sleeves
The Zoodiac component of the deck not only complement the strategy but also cover up their shortcoming
Around half of the set is made up of "Parallel Foil" cards, which are pretty much identical to their non-foil counterparts
Until your next turn, whenever either of those creatures deals combat damage, you draw a card