SOUTH POLE SQUADRON PENGUINGER (南極戦隊ペンギンジャー Nankyoku Sentai Penginjaa)!
Mega Delibird Ice/Flying Ability: Huge Power (?)
BST:45/85/45/95/55/105 = 430
*New Move: Big Present Category: Physical Type: Normal Power: Varies PP: 5 Accuracy: 90% The user attacks by giving the target a large gift with a hidden explosive. It restores HP sometimes, however. -Note: Results vary from fully restoring a Pokemon's HP/status to an OHKO.
I wouldn't give Delibird Huge Power as it doesn't really fit Delibird's motif like it (sorta) does with Mawile. I do understand why such a low BST pokemon needs an ability like that or Moody to cheat its stats, or needs a versatile (like a Smeargle) or specialized (like I don't what) movepool to be used.
An ability that would help it cheat its stats while being more in line with its motif would probably be priority-related. ("Priority Mail," anyone?) Both Prankster and Gale Wings would be acceptable fits; Delibird on the other hand could get an ability that would maybe give Priority to all of its attacking moves, or, instead, to "Present"-type moves (which would be a new category), or even to all of its moves in general if we're really desperate. With the middle idea, we could at the very least come up with Ice and Flying-type variants of Present: I'm thinking "Air Mail" and "Cold Treat" would be excellent names. (What's more, these moves could have priority themselves, or the new ability could give Present-type moves +2 priority?) There could also be relevant status moves that are "Present"-type that not only Delibird has access to.
We could also attempt to cheat Delibird's stats using moves (like Foul Play) instead of abilities.
Going from 45/55/45/75/65/45 to 45/95/50/85/105/50 wouldn't necessarily be so bad for Delibird if it got priority on its favorite attacks. It would be a Talonflame with more type coverage if it got a Prankster-type ability for its attacks, and it'd be a gimmicky Talonflame if it got a Gale Wings-type ability for its newly-classed Present-type moves.