Starter tip: Begin with ~40 % lands (24 in a 60card deck) and adjust after a few test hands
There was a perfect confluence of these things in Theros/Return to Ravnica Standard, with devotion, powerful one-drops like Thoughtseize, and lots of missing fixing prior to all ten Temples being released
Though other cards that have been revealed so far are also pretty exciting, Tritons Trident, Rapunzel, Mickey Mouse and Mulan, for example, the Ursula, Sea Witch Queen card is one we cant wait to get our hands on
Barrin, Master Wizard (Saga/Legacy/Destiny) Barrin, Master Wizard, though a very fragile 1/1, basically turned every card on your side of the board into an Unsummon
Blue-Red Delver isnt a bad matchup per se, but it has definitely gotten worse now that Delvers creatures all have flying, and Murktide Regent in particular is an issue due to how quickly it can close out a game