Oracle

Legendary Enchantment 

Whenever one or more creatures you control deal combat damage to a player, create a colorless Treasure artifact token with "T, Sacrifice this artifact: Add one mana of any color."
At the beginning of your end step, if you control five or more artifacts, transform Storm the Vault.

Tournooi-info

Legal in: Vintage, Legacy, Modern, Commander

Officiele rulings

1/19/2018
Storm the Vault’s first ability can trigger more than once in a turn if creatures you control deal combat damage at different times in a turn (most likely because one or more has first strike) or if creatures you control deal combat damage to more than one player at once.

1/19/2018
The last ability of Storm the Vault doesn’t trigger if you don’t control five or more artifacts as your end step begins. If it does trigger but you don’t control five or more artifacts as it resolves, it does nothing.

1/19/2018
In a Two-Headed Giant game, if you control more than one creature that can attack, you attack different opponents so that Storm the Vault’s first ability triggers twice.

1/19/2018
For more information on double-faced cards, see the Ixalan mechanics article (http://magic.wizards.com/en/articles/archive/feature/ixalan-mechanics).

Decktips