It could. I play 2 of my legendary summoners at level 3, but that's a big disadvantage against someone who plays the same summoner at max level.
For any summoner, if you don't have them at max level, you can't use monsters at max level, and often they pick up a nice boost at max level.
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I do understand that, but that lvl7 is something between lvl3 and lvl4 legendary summoners... Anyways, I will try to get to the max lvl summoners step by step as I have to lvl up ordinary cards to the max...
Yep. You have time to use them at level 7 until you catch up with monsters. And you'll see if that's enough for your needs.
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