During your turn, Yuna and enchantment creatures you control have trample, lifelink, and ward .
At the beginning of your end step, return up to one target enchantment card from your graveyard to the battlefield with a finality counter on it. (If a permanent with a finality counter on it would be put into a graveyard from the battlefield, exile it instead.)
Yuna is a GW enchantress payoff that turns your enchantments—especially enchantment creatures—into a lifelinking, trampling, hard-to-remove army while recurring your best enchantments from the graveyard every end step. You ramp into Yuna, flood the board with auras and enchantment creatures, and grind value by reanimating bombs that died or were sacrificed, eventually swinging for lethal lifelink trample damage or assembling an enchantment-based engine.
Repeatable enchantment recursion every turn provides relentless card and board advantage
Trample, lifelink, and ward 2 on your turn make attacks both lethal and resilient against removal
Lifelink gain stabilizes against aggro and fuels life-payment effects
Deep, well-supported GW enchantment/enchantress card pool
Finality counters can intentionally exile your stuff away from graveyard hate or sacrifice loops
Ward and protections only apply during your turn, leaving you open on opponents' turns
Removing Yuna shuts off the anthem and slows the recursion engine
Vulnerable to board wipes and enchantment removal like Back to Nature
Reliant on having enchantments in the graveyard to maximize the trigger
Can be grindy and slow to close versus faster combo decks