Zombies are slow and often hard to kill
If you need a quick way to gain a ton of hand advantage, warping a Starwinder is far from the worst thing you could do - even if you're missing out on the 7/7 beater it provides when you warp it for a single turn
Regarding your second point, its funny how in these earlier sets, only that letter is indeed different, yet the cards themselves were the same
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The latter is the type of proxy I wanna talk about today
You should not build your deck around Arcanine ex, though they should find space for the Pokmon in an aggressive Fire-type strategy