I am working on a GW deck. So I'm kinda going through the same thing. You really want to pick a card/strategy that isn't going to rotate and build around it. Also you may want to stay with 1 or 2 colors and not 3/4.
I believe alot of these will rotate so this may not even be an option:
I had played Thorn Lieutenant then played Dub. On my attack step OP used Seal Away. Does flash allow you to treat the card like an instant? Also would both cards go to exile? or just thorn because of the elf token that leaves behind?
Thorn should have struck first and caused 4 damage to OP, then the seal away would have removed thorn/dub and left behind 1/1 elf token.
I believe alot of these will rotate so this may not even be an option:
Combustible Gearhulk
Earthshaker Khenra
Hazoret the Fervent
Kari Zev, Skyship Raider
Angel of Sanctions
And those are just example creatures.
and as far as competitive standard...I can't say anything.
I don't think I fully get how Seal Away works.
I had played Thorn Lieutenant then played Dub. On my attack step OP used Seal Away. Does flash allow you to treat the card like an instant? Also would both cards go to exile? or just thorn because of the elf token that leaves behind?
Is there any use for this card currently since Blossoming Defense is rotating.