You can't attach Water Energy cards from your hand to Articuno.
Attacks
10Freeze Solid
If there are any Water Energy cards in your discard pile, flip a coin. If heads, attach 1 of them to Articuno.
50Ice Cyclone
Flip a coin. If heads, this attack does 10 damage to each of your opponent's Benched Pokémon. If tails, this attack does 10 damage to each of your Pokémon in play. (Don't apply Weakness and Resistance for Benched Pokémon.)
How much is Articuno #4/144 worth?
Articuno #4/144 is a Rare card from Skyridge (2003) — today it trades at roughly $111.91 ungraded. Across the 2 printings we track, copies run anywhere from $120.00 to $571.68 depending on the version you're holding.
Grading changes the math on this one: a PSA 10 is valued around $2,734.85, roughly 24.4x the raw price, while a PSA 9 sits near $159.99. 310 copies have been graded to date, and 8% of them came back a 10 — worth knowing before you pay grading fees.
These figures come from nightly market-data syncs verified against completed sales. Use the chart above to see the trend before you buy or sell.