The original Birds of Paradise says Summon Mana Birds, and the original Llanowar Elves reads Summon Elves. That was because Magic's creator Richard Garfield wanted players to feel like powerful mages summoning creatures to fight for them not too far from what the the Final Fantasy video games do
There's a couple of examples of this in the game design, and the main one is the Ink system
That said, youll want to check out our rundown of each deck below to make sure its going to fit with how you like to play, and give you the strongest foundation as you evolve and improve your deck with any new cards you collect
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Tolaria is also another location that's going to be important -- the academy built there will be the setting of multiple expansions, and also one of the most traumatizing cards for the people who suffered through the Urza block
The value of X is determined only once, as the reflexive triggered ability resolves