Guildpact 6

But the Planar Bridge changed everything. The portal had killed people and demolished the Embassy of the Guildpact. Any attempt to interfere with the Guildpact was punishable in any number of ways—including death—and any demonstrably devastating threat to Ravnica was clearly within Jace Beleren’s legal purview. Now he felt certain he could use the Guildpact’s power. Close that Bridge and end the threat Bolas presented by ending Bolas once and for all.

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War of the Spark: Ravnica, Chapter 12