I love this card, not just because Dwarf decks are my favourite, or for the memory of Thorin's last, valiant charge. For 1 resource (and only 1 Dwarf hero, so it's not limited to Dwarf-only decks!), you can put any discarded Dwarf ally first into play and then back into your deck. This can be useful for many situations: pop in a Longbeard Elder if you need a bit more , or a Veteran of Nanduhirion or Veteran Axehand if you need some extra . If you need temporary then there's Longbeard Sentry or Erebor Guard. Alternatively, if you didn't want to pay the extra upkeep cost for Dwarven Sellsword, then you could bring him back for a phase with this, as well. Or maybe a dwarf ally you like just happened to die too soon. Dwarves can fill nearly any role needed, so being able to call one on command is rarely a bad thing.

I am sure that there are several combos that one could devise to get more benefit out of the ally being returned (for example, delving Soldier of Erebor or poor Brok Ironfist, then using To Me! O My Kinsfolk! to pair with a use of A Very Good Tale). It is also good, for allies you'll want to actually play again, to use in a deck with the in-trait Bofur, who can shuffle your deck for you to bring your summoned ally closer to the top of your deck.

But what I really wish to suggest--in combination with the Bofur shuffle above--is to use To Me! with those Dwarf allies with enter play effects. Most Dwarf allies with their effects have the "When you play from your hand" qualifier, but a few don't: Miner of the Iron Hills, Longbeard Orc Slayer, and Ered Nimrais Prospector all trigger effects upon entering play with no other qualifiers. That means that To Me! becomes a 1-cost recursion for Condition removal, damage to all Orcs in play (especially useful in scenarios like Into the Pit and The Seventh Level), or recurring other cards back into your deck. The added benefit is that these allies are, as mentioned, put back into your deck, allowing you to make use of their abilities at least one more time. This event is very versatile, and by extension makes your whole deck just a bit more versatile as well.