A classic card like Show and Tell says that each player may put an artifact, creature, enchantment, or land card from their hand onto the battlefield. In this case, after Show and Tell resolves, the cards just enter the battlefield naturally, so they dont use the stack and there cant be any response like a counterspell
Obsidian Flames is no different, with Charizard even being one of the featured Pokemon of the expansion
Use this on an opponents creature, preferably one attacking someone else, double that creatures damage and blow up the attacker after combat
And I have nothing more for you for now
The victim, who has a concealed carry permit, drew his gun during the incident, prompting his attackers to run off
In fact, there will be an overarching plotline goal to help further add flavor and gameplay mechanics to tie everything together