A counter does not go away when you Bench the Pokmon, but it does go away if the Pokmon evolves (damage counters are a special exception to this rule)
The Charizard ex SIR from SV151 trades around $234 in PSA 10 condition based on TCGplayer market data, while equivalent SIRs of less iconic Pokemon trade at half or less
When playing blue tutor effects, putting cards onto the top of your deck, into your hand, or onto the battlefield is going to be ideal, as blues graveyard and exile recursion is notably worse than blacks
If that card is a Supporter, use its effect as the effect of this attack.), [R][C] Blaze (60 damage.) Weakness: Water (x2) Resistance: None Retreat: 1 Sobble Water HP70 Basic Pokemon Attack: [W] Surprise Attack (30 damage
But you can use to get an out-of-color discard, mass removal, enchantment removal, counterspell (just add flash) and more to make it pretty good