This weeks card of the week is Druid’s Repository an Enchantment that allows you to generate mana at instant speed.
Druids’ Repository is an Enchantment for 1GG, whenever you attack with a creature you put a charge counter on the Enchantment. This effect triggers once for each creature you control attacks, so it is best used in go wide decks that look to overwhelm your opponents with numbers. The second ability allows you to remove a counter and add one mana of any colour to your pool, this can be done multiple times and at instant speed.
The main advantage of Druid’s Repository is that it can create mana of any colour allowing you to both ramp and fix your colours. It also offers a large degree of flexibility as you can either store up the counters on Druids’ Repository to have an explosive turn or play a large spell or you can gradually use them to play spells ahead of curve. It also combines well the keyword proliferate allowing you an alternative method of increasing the counters and of course Doubling Season.
I think that it would work really well with the following commanders; Najeela, the Blade-Blosson, Rith, the Awakener, Hapatra, Vizier of Poisions and Atraxa, Praetors’ Voice
Addendum, my fellow librarian Liam recommends Druids’ Repository for Phylath, World Sculptor.