Blackwing - Blizzard the Far North

Edison Card Text
© Cannot be Special Summoned.
① When Normal Summoned: You can target 1 Level 4 or lower "Blackwing" monster in your GY; Special Summon it in face-up Defense Position.
Targets
No Damage Step effect
Banlist • Unlimited
Interactions
Can you choose chain order between Blizzard and Whirlwind when Doomcaliber is present?✓
Blizzard is Normal Summoned while Whirlwind is face-up and Doomcaliber is on the field.
Yes. You choose the chain order for your effects, usually CL1 Blizzard CL2 Black Whirlwind; Doomcaliber will always tribute itself, but it can only negate the effect directly below it. In this case, Doomcaliber died for nothing.
Does Black Whirlwind chain-block Oppression on Blizzard?✓
Blizzard is Normal Summoned and Whirlwind triggers.
Yes. Blizzard is CL1 and Whirlwind is CL2, so Oppression cannot be chained to Blizzard's effect.
Rulings
edisonformat.net
● If you control "Black Whirlwind", and have a "Blackwing" monster in your Deck with less than 1300 ATK:
When you Summon this card, both its effect and "Black Whirlwind" will trigger. Since they are both optional effects, you can order them in any way you like.
If you order them as: Blizzard Chain Link 1, Whirlwind Chain Link 2, then your opponent can only respond to the newest chain link - Black Whirlwind's effect.
This means that cards like "Royal Oppression" and "Pulling the Rug" can't be activated at this time - Those cards can't be chained to Black Whirlwind's effect.
edisonformat.com
The restriction against Special Summoning “Blackwing – Blizzard the Far North” is not an ‘effect’. The effect of “Blackwing – Blizzard the Far North” targets 1 “Blackwing” monster in your Graveyard.