A: Arcanine VMAX cards generally cost $10-100+ for regular variants, while Rainbow Rare and Secret Rare VMAX can be worth $50-1000+ in mint condition
On the competitive side, Mega Starmie ex has already shown real results in Japan alongside Mega Froslass ex, meaning this card carries both player and collector demand at once, which is always a good sign for long-term value
In theory, you could play Invasion of Xerex to bounce something, use Yorion to blink the battlefield, and then use the battle to bounce Yorion, Sky Nomad, which would essentially let you blink your entire board each turn if you had enough mana
That's a more viable strategy against Burn, Twin, and Abzan, but that's because these decks have such sizable metagame shares