They offer an elegant unboxing, and arrive at roughly the same price point that Secret Lair drops did
If you bias towards big creatures worthy of reanimation, Cruelclaw can become a double enabler, casting battlecruisers for free or discarding them to Reanimate later
Oh, and those are also both cats something to note for Pioneer or future Standard sets, perhaps
Yes, this also means its effectively another Primordial Hydra for your Hydra-typal deck (and its even sillier than usual with Doubling Season)
Want to get back a Cyclonic Rift or Swords to Plowshares too
Brawl Not Legal Vintage Legal Timeless Not Legal Commander Legal Pauper Not Legal Oathbreaker Legal Penny Not Legal Toolbox Buy This Card Notes and Rules Information for Helm of Chatzuk: If a creature with banding attacks, it can team up with any number of other attacking creatures with banding (and up to one nonbanding creature) and attack as a unit called a "band." The band can be blocked by any creature that could block a single creature in the band