It may not be the most efficient combo kill by 2024 standards, but we have several different ways to give a Cleric infinite toughness and then convert that to either a kill or at least infinite lifegain
Early in the duel, Primite Dragon Ether Beryl , into Primite Lordly Lode , into Primite Fusion , into Spirit with Eyes of Blue , into milling a Ball and/or Blue-Eyes White Dragon , leads into a Fusion Summon of Primite Dragon Nether Berzelius without losing any card advantage
More mana helps with the play bit, which is where cards like Bard Class and Relic of Legends come in, with the latter being particularly powerful
The bad rap it gets is entirely down to the prevailing attitude well, peer pressure to not wrath once a game goes a certain length
And with all-new boosts like Mega Turbo and Double Dragon Energy cards, the skys the limit in the XYRoaring Skiesexpansion