You can also make crazy combinations, like copying an enchantment, land, or planeswalker
The fact that you have to pay a blue to activate flying and then an additional two mana for the effect means if you spend time trying to get this to work as soon as you can, you arent developing the rest of your board at all for a while
Do you buy damaged or heavily played cards
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Setup Rule Cards These are cards that can only be activated during the Setup Phase before the start of the duel
Alternatively, it can just be a solid buff to a deck running a lot of dinosaurs, and you can simply cast it for 1 additional mana, giving all your creatures an instant benefit