You may look at the top card of your library any time.
You may play lands and cast spells from the top of your library. If you cast a spell this way, pay life equal to its mana value rather than pay its mana cost.
{T}, Sacrifice ten nonland permanents: Each opponent loses 10 life.
![Bolas's Citadel (White Border) [Mystery Booster 2]](http://goblingames.nz/cdn/shop/files/9ba845ed-7948-50e9-9cb5-18a19c67dd32_8b680540-29cb-423d-a015-4d1e28ff629f.png?v=1743280720&width=1445)
![Bolas's Citadel (White Border) [Mystery Booster 2]](http://goblingames.nz/cdn/shop/files/5a16665a-2600-460a-a5ad-417930fda62c_e1e86e11-1f42-4699-907e-d1c895f98351.png?v=1743280720&width=1445)
![Bolas's Citadel (White Border) [Mystery Booster 2]](http://goblingames.nz/cdn/shop/files/9ba845ed-7948-50e9-9cb5-18a19c67dd32.png?v=1743280720&width=1445)
![Bolas's Citadel (White Border) [Mystery Booster 2]](http://goblingames.nz/cdn/shop/files/5a16665a-2600-460a-a5ad-417930fda62c_54c88d69-13a1-42c5-b497-0d890d32aa08.png?v=1743931072&width=1445)
![Bolas's Citadel (White Border) [Mystery Booster 2]](http://goblingames.nz/cdn/shop/files/5a16665a-2600-460a-a5ad-417930fda62c.png?v=1743280720&width=1445)
![Bolas's Citadel (White Border) [Mystery Booster 2]](http://goblingames.nz/cdn/shop/files/5a16665a-2600-460a-a5ad-417930fda62c_91038481-e953-43c7-85e9-ddde640007a9.png?v=1743931044&width=1445)
![Bolas's Citadel (White Border) [Mystery Booster 2]](http://goblingames.nz/cdn/shop/files/5a16665a-2600-460a-a5ad-417930fda62c_94f9524e-d3d1-474a-848d-e82c592ee8d9.png?v=1769272601&width=1445)
![Bolas's Citadel (White Border) [Mystery Booster 2]](http://goblingames.nz/cdn/shop/files/5a16665a-2600-460a-a5ad-417930fda62c_a51fdaeb-2620-4e0f-8b15-61e303ee09de.png?v=1788243293&width=1445)