A pretty foil would connect with the rest of the card in the best possible way, and sometimes it does that
Card Details Stage: Basic [1] Call Sign Search your deck for a Lightning Pokmon, reveal it, and put it into your hand
Yuriko, the Tiger's Shadow 1UB Legendary Creature Human Ninja 1/3 Commander ninjutsu UB (UB, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand or the command zone tapped and attacking.) Whenever a Ninja you control deals combat damage to a player, reveal the top card of your library and put that card into your hand
The White rare two-drop gives you hexproof, cheaper than Ivory Mask, and a harder to burn body than Aegis of the Gods or Keen-Eared Sentry
Casting instants is arguably the best use of prowess, as it means I can buff my prowess creatures during combat or even during my opponents turn
Anytime you cast an expensive creature spell, you get an experience counter, and Kalemne gets stronger