Hey @mawit07 ... you should contact us in discord if you can and we can discuss further. Here's the discord link to get us or you can DM any of our teammates: https://discord.gg/JKAWbFW
And to answer your question, we have 5 different guilds so they each have their own requirement. Those range from 0 DEC contributions (free) to 1500 DEC per week for Champion level. We have 100 DEC Troops, 250 DEC Power, 500 Diamond, plus 2 free guilds Lobby and now Legion.
We would be happy to have you join us, I've seen you around the game for a long time and you'd fit right in!!!