If either the opponent or the permanent you control becomes an illegal target by the time Iroh's second ability resolves, the ability does nothing and you cannot choose to have the opponent gain control of the permanent
In the case of Arcanine, I penciled out the notes, It runs gracefully, as if on wings. and It runs agilely as if on wings. Next, in order to better understand how the players who use a certain Pokmon in the game feel about it, I take notes on its attacks, stats, Abilities, and so on
BY Luffy 4xEB01-056 4xOP04-083 4xOP06-086 4xOP06-106 3xOP07-109 1xST13-003 4xST13-007 4xST13-010 4xST13-011 4xST13-012 4xST13-013 4xST13-014 4xST13-015 3xST13-019 Explanation Black Yellow Monkey from the trash
1x Charmander 1x Growlithe 1x Salandit 1x Salazzle 1x Sizzlipede 1x Charmeleon 1x Centiskorch 1x Charizard 1x Arcanine 1x Rattata 1x Raticate 1x Spearow 1x Fearow 1x Jigglypuff 1x Wigglytuff 1x Chansey 2x Pok Ball 2x Professor's Research Blastoise & Gyarados Deck (Genetic Apex) First-Time Rewards: 3x Pack Hourglasses, 100x Shinedust, 1x Shop Ticket Battle Task: Knock out your opponent's Active Pokmon 2 times with an attack from a Lightning-type Pokmon