Unstable Glyphbridge // Sandswirl Wanderglyph

For each player, including yourself, you must choose a creature with power 2 or less to save if you can.

If Sandswirl Wanderglyph leaves the battlefield on a turn in which an opponent attacked you or a planeswalker you control (perhaps because it died in combat or another player cast a spell that destroyed it), that opponent can cast spells.

The back faces of some cards with craft refer to cards "used to craft" it. This refers to the cards exiled as part of the cost of the craft ability of the front face. Those cards are considered to be "used to craft" that permanent as long as they remain exiled and the permanent remains on the battlefield, even if the permanent's controller changes or some of its characteristics change (because of a copy effect, for example.)

Unstable Glyphbridge's first ability triggers if you cast it from any zone. It doesn't trigger if you put Unstable Glyphbridge onto the battlefield without casting it.

If the materials required include multiple objects, you may exile some of them from among permanents you control and the rest from among cards in your graveyard. You don't have to choose all permanents or all cards from your graveyard.

Sandswirl Wanderglyph's abilities won't stop opponents from attacking battles you protect or casting spells after attacking battles you protect.

Once Sandswirl Wanderglyph's middle ability resolves, that opponent won't be able to attack you or planeswalkers you control that turn, even if Sandswirl Wanderglyph is no longer on the battlefield.