Beartic

Beartic isn't the cute and cuddly Ice-type teddy bear that its pre-evolution is, though it doesn't really challenge the current best Ice-types either. An unimpressive moveset combined with a subpar ATK stat leaves more to be desired if Beartic is to challenge Mamoswine. Glaceon, Jynx, and Weavile all beat Beartic in Ice-type DPS, which makes this bear more of dex entry or budget pick than anything worth investing in. 

Best PvE Offensive Moveset

• Powder Snow is more meaningful for Beartic as an Ice-type attacker.
• Charm is very narrowly better for neutral fights, but this isn't Beartic's forte. 
• Ice Punch gets STAB and pairs with Powder Snow to fulfill an Ice-type role. 
• Play Rough shares the same typing with Charm to fulfill a Fairy-type role, but maybe consider an actual Fairy Pokemon instead. 
• Surf doesn't have much use for Beartic. 

Best PvE Defensive Moveset

• Charm hits very hard on defense and is the superior choice. 
• Powder Snow has poor damage output on defense and doesn't provide additional coverage. 
• Ice Punch as a 3-bar move can be used frequently, gets STAB, and is somewhat hard to dodge.
• Surf provides coverage against Beartic's weakness to Fire and Rock Pokemon.
• Play Rough helps cover Beartic's weakness to Fighting-type attackers like Machamp. 

Powder Snow is preferred for its fast energy generation, though Charm's high damage output can surprise opponents. 

Ice Punch is recommended for its low energy cost and STAB damage. Surf also doesn't cost a lot of energy and provides coverage against Beartic's weaknesses to Rock and Fire Pokemon. Liquidation is largely redundant thanks to Beartic already learning Surf. Play Rough costs a lot of energy to access, which makes it less desirable but not unusable.