...because it helps against Brain Freeze, I suppose? Truth is, in less than 5% of games, Solidarity/High Tide will actually care about
Gaea's Blessing. You're much better off, playing something proactive like Ethersworn Canonist or another copy of Gaddock Teeg. In case you are afraid of bounce spells, remember to grant protection from blue in your
mainphase. Thus, they will have to bounce on their turn, further restricting their mana and not allowing to resolve a High Tide first. This of course only applies to situations where you have either 2 Mother of Runes or one Mother + Scryb Ranger. It works pretty well, even against
Wipe Away.