Giving a static clause that can ping your foe for one life for each creature they control each turn is a solid boon in general, and when paired with Y'shtola, you're in a good position to be drawing an extra card on each player's end step
it is worth checking with the retailer whether or not they currently have stock before you make the trip to visit them, however
Its because all these mana sinks are providing is free advantage from the opponent
So, with that explained what makes Iron Hands ex so special
Secondly, when a permanent with counters on it is destroyed, Yuna puts an equal amount of +1/+1 counters onto a creature
Until end of turn, your life total cant change, and permanents you control gain hexproof and indestructible