It is not as powerful in Oldschool as it is Vintage, where an additional 3 mana in the early game can resolve a spell which if not dealt with can end a game outright
The last ability of Clive's Hideaway will allow you to cast both exiled cards without paying their mana costs (assuming you control four or more legendary creatures at that time.) (2025-06-06) In a Two-Headed Giant game, Traveling Chocobo's second ability does not affect triggered abilities of permanents your teammate controls
This deck has a counter subtheme, so this Doctor's ability has quite some utility
Pteramander works well enough with the Arclight Phoenix plan that its probably better than playing a ton of Drakes, plus it enables Chart a Course early if thats something youre interested in
It is different in very interesting ways, however, and does by nature of its design occupy a different place in the cast-a-spell-from-your-graveyard-that-your-opponent-wasnt-expecting-you-to-cast space
(2022-06-10) Escape's permission doesn't change when you may cast the spell from your graveyard