The decisive engagement of the war came when Lysimachus invaded and overran much of western Anatolia, but was soon isolated by Antigonus and Demetrius near Ipsus in Phrygia. <answer>Seleucus</answer> arrived in time to save Lysimachus and utterly crushed Antigonus at the Battle of Ipsus in 301 BCE. <answer>Seleucus</answer>' war elephants proved decisive, Antigonus was killed, and Demetrius fled back to Greece to attempt to preserve the remnants of his rule there by recapturing a rebellious Athens. Meanwhile, Lysimachus took over Ionia, <answer>Seleucus</answer> took Cilicia, and Ptolemy captured Cyprus.
Who saved Lysimachus in Phrygia?
Seleucus