Druids' RepositoryHow it works & interactions with other cards

What It Does

This enchantment features two distinct abilities. The first is a triggered ability that triggers whenever a creature you control attacks, placing a charge counter on the Repository for each attacker. The second is an activated mana ability that allows you to remove those counters at any time to add one mana of any color to your mana pool.

How It Resolves Step by Step

During the Declare Attackers step, as soon as you finish declaring your attacking creatures, the first ability triggers once for each individual creature. These triggers go on the stack and, when they resolve, you place the corresponding number of charge counters on the enchantment. You can then activate the mana ability whenever you have priority, or while you are casting a spell or activating an ability that requires a mana payment. Since it is a mana ability, it does not use the stack and cannot be responded to.

Common Mistakes

Players often forget that the ability triggers upon the declaration of attackers. This means if a creature is put onto the battlefield already attacking (via a 'tapped and attacking' effect), it did not 'attack' for the purposes of Druids' Repository, and you will not get a counter. Additionally, remember that the mana does not carry over between phases; if you add mana during combat, it will vanish as the combat phase ends unless you spend it.

When to Play It

Druids' Repository is best utilized in 'Go-Wide' strategies where you are attacking with multiple creatures every turn. It is particularly effective when you have expensive spells to cast in your second main phase or if you need to keep mana open for instant-speed interaction during your opponent's turn, all while maintaining pressure on the board.

Interaction examples

Fueling Future Draws

Sylvan Library

If you attack with three creatures, Druids' Repository gains three charge counters. During your next draw step, Sylvan Library triggers, allowing you to draw two extra cards. You can immediately remove the charge counters from the Repository to generate mana, helping you cast those newly drawn cards or potentially paying for other effects without tapping your lands.

Trampling Through

Garruk's Uprising

With both enchantments on the field, your creatures gain trample. When you declare an attack with a large creature, Druids' Repository triggers to give you a counter. You can then use that mana to cast an instant-speed combat trick to pump your creature, maximizing the trample damage provided by Garruk's Uprising.