one piece trading card game decks ULTIMATE STARTER DECK the starter deck includes pre Once Piece Card Game Learn

Sublime Epiphany's second mode can't counter an activated or triggered mana ability

Edric, Spymaster of Trest Edric, Spymaster of Trest leverages blues many unblockable creatures, like Mist-Cloaked Herald and Slither Blade, to slip through your opponents defenses and rip through the deck to chain together extra turn spells, and eventually conclude the game with a Beastmaster Ascension or something

Strategies utilizing multiple permanent types in 1 or more engines with low CMC cogs are also quite viable and extremely dangerous even in environments with a reduced card pool

Solemn is a more modern card though and does reinforce the lifegain is white idea so either is probably fine

The mana base could be better, you have a lot of board wipes for a deck that plays to the board (though Austere Command is a step in the right direction), and there are questionable inclusions like Graveblade Marauder