When Abigale enters, up to one other target creature loses all abilities. Put a flying counter, a first strike counter, and a lifelink counter on that creature.
Abigale is a cheap, evasive lifelink threat who can strip a problematic creature of its abilities and then hand out keyword counters. Most decks lean on her as a Voltron/counters engine: protect her, pump her, and use repeated counter placement (or counter-doubling) to build a wide or tall board of evasive lifelinkers while shutting off opposing bombs.
Two-mana flying first-strike lifelink body is great offense and defense for the cost
Ability-removal mode neutralizes commanders, indestructible threats, and combo pieces
Counters synergize with proliferate, doubling effects, and +1/+1 counter payoffs
Lifelink keeps you out of burn/aggro range and fuels life-as-resource cards
Fragile 2-power body that dies to nearly any removal
Counter-removal mode targets only one creature per ETB, so it needs repeated blinks/recasts
Lacks raw card advantage or ramp on her own
Voltron lines are vulnerable to a single Swords or Path