You can cast Primal Might with 0 as the value of X to just have the two target creatures fight
Pokmon TCG teases a new cross-platform digital application and mobile support for next year Cards from Pokmon TCG Online can be transferred over, spelling the end for the old app
The price information is based on their own marketplace sales history, so there may be little to no data for exceedingly rare cards

Admiral Brass, Unsinkable Aeronaut Tinkerer Assassin's Ink Back from the Brink Blink Blink Dog Blink of an Eye Blinking Spirit Blinkmoth Infusion Blinkmoth Nexus Blinkmoth Urn Blinkmoth Well Bramblefort Fink Brink of Disaster Brink of Madness Cephalid Inkmage Cephalid Inkshrouder Consuming Sinkhole Contaminated Drink Danny Pink Don't Blink Dreamdrinker Vampire Drinker of Sorrow Earthlink Firedrinker Satyr Glimpse the Unthinkable Glimpse, the Unthinkable (playtest) Goblin Tinkerer Hexdrinker Hokori, Dust Drinker Hoodwink Ichor Drinker Immobilizing Ink Imperious Inkmage Informed Inkwright Ink Dissolver Ink-Eyes, Servant of Oni Ink-Eyes, Servant of Oni Avatar Ink-Treader Nephilim Inkfathom Divers Inkfathom Infiltrator Inkfathom Witch Inkling Mascot Inkling Summoning Inkmoth Nexus Inkrise Infiltrator Inkshape Demonstrator Inkshield Inkwell Leviathan Inspired Tinkering Kadena, Slinking Sorcerer Kelsinko Ranger Killian, Ink Duelist Kitchen Finks Knight of the Kitchen Sink Knight of the Kitchen Sink Knight of the Kitchen Sink Knight of the Kitchen Sink Knight of the Kitchen Sink Knight of the Kitchen Sink Lavabrink Floodgates Lavabrink Repels the Magmaloth Lavabrink Venturer Lifelink Lita, Mechanical Engineer Magmatic Sinkhole Marshdrinker Giant Master Trinketeer Mindlink Mech Mirko Vosk, Mind Drinker Momentary Blink Nezumi Linkbreaker

Assuming you've built your deck around the creature type, you usually won't have problems putting at least a few cards into play for free
Don't let that mana cost fool youit's a premier card to cheat into play