The best time to play this card is when your opponent has spent a bunch of their resources on bringing out a big monster, like Saryuja Skull Dread or Borreload Dragon
however, if you do not have newer cards theyre proven enough to net some wins
I would be buying as much Prismatic Evolutions booster bundles as I can, whereas Id leave the Destined Rivals behind
Email [email protected] to make an offer.
Iron Hands ex wants to target low HP Pokemon, so you can use Prime Catcher or Bosss Order to force a low HP Pokemon to the Active spot
Drawing a card whenever you cast a spell with mana value 5 or greater is excellent with sweepers like pre-rotation Sunfall, where you can kill every creature and draw a card, with removal spells like Leyline Binding, or with the various Overlords that can enter the battlefield for cheap via impeding, like Overlord of the Hauntwoods