Like this guy... would help me out in some messy situation, when I know, I will survive at least 2 turns... however deck-creation can make this card veery worthy...
...I just checked my 10 decks and in 7 of them there are only two or even only one matching card.
Regarding this, this card could also be stated: Summons your favorite red uncommon card (or one of the two favorites)... this could be pyramids (I know you first have to be able to pay for them)... but also sabotage tunnel, foundry or crypt.
IMO not a game breaker, but a very strong common supporting card.
I think many players would use it, as it is similar cheap as magic portal and brings you the "wanted card".
Maybe you could cripple it by leaving "from your deck" out, so your pawn can "mess up" a bit more... and be more pawn-like ;-)
...even a messenger-like version (not from players deck) would make it interesting for me... but then with lower costs...
maybe just 1r, as it's only a pawn ;-)