This is the number of charge counters needed to enable that line , which can be put onto the card by tapping creatures
Odd-Eyes Persona Dragon X DARK Level 5 [ Dragon / PendulumEffect ] ATK 1200 DEF 2400 P Scale 1 Once per turn, during the End Phase, if your opponent activated a card or effect this turn that targeted 1 "Odd-Eyes" Pendulum Monster you controlled (and no other cards) while this card was in your Pendulum Zone: Special Summon this card, and if you do, place 1 face-up "Odd-Eyes" Pendulum Monster from your Extra Deck in your Pendulum Zone, except "Odd-Eyes Persona Dragon"
Hitting two permanents and bringing them back immediately also opens this blue instant up to some shenanigans, like targeting Archaeomancer and Gilded Lotus which allows you to re-cast it infinitely
While Allosaurus Shepard's stats are nothing to write home about, being a 1/1 for one, it totes an ability that for six mana, can alter each Elf creatures under its owners control to have a base power and toughness of 5/5
According to Justinbasil, this Secret Rare card cannot be found in the set itself , but will instead be a promo card obtained in certain products with Pokmon TCG: Temporal Forces products