Prices are brutal for 151
Vivien Reid shines in grindy matchups, where she can remove key threats like Unholy Annex, Archfiend of the Dross, Overlord of the Hauntwoods, Deep-Cavern Bat, and Caretaker's Talent while leaving behind a formidable planeswalker
Luckily, there are places to take your cards in person and have them graded locally with an even quicker turnaround time
The ability to sacrifice it to tutor any other land in a player's deck is certainly powerful, though an effective 4 mana (3 + tapping Urza's Cave) to activate is a steep cost in a format as potentially fast as Modern
It would be quite a coincidence if the optimal number of land searchers was twelve, and Tron has enough threats that cutting a few is not going to cause any problems
Iron Valiant ex Ability - Tachyon Bits Once during your turn, when this Pokemon moves from your Bench to the Active Spot, you may put 2 damage counters on 1 of your opponents Pokemon