God-Eternal Rhonas will double the stats of your creatures and give them vigilance for a massive attack
Alternatively, Vexing Bauble and Void Mirror will counter all of Eye of the Storms spells, but you can get around this using a card like Benevolent Geist
In non-cEDH decks, Terra can be played with a ton of different enchantments to focus on that as the key win-con
The Sapphire/Steel deck seems faster and more aggressive for grabbing lore, while the Amber/Amethyst deck may require a bit more strategizing and time in order to win
Its fascinating that this card is often only present in decks that have no intention of resolving its effect
Needing to pay two mana is significant, so if you can play the Eternal Soldier alongside Duke Ulder Ravengard, Soulbright Flamekin, or Aurelia, Exemplar of Justice you can do some tricky things