@Freakynation76 The guild gets credit for you earning those seals each week, you don’t donate them. So your guild gets credit for all 1500, and you still get to spend them on chests every week.
The guild I am currently in requires 300 trophies per week. 7 days of daily login, 14 PvP tiers gained, and 100 ranked PvP wins will yield 1115 seals each week. That leaves 385 to be acquired through other means. 1500 doesn’t seem that far, honestly.
Seal tasks & rewards
Daily Login - 15
Gain a PvP tier - 15
Win a Ranked PvP match - 4
Win a Max Difficulty Explore - 6
Gain a Level - 10
Treasure Hunt with 60+ moves - 20
Perfect Arena Run - 30
Win a match (any type) - 4 (I assume this will cause the specific match wins listed above to count “twice”)