Okay so the strat is super simple. Just play a bunch of free artifacts/creatures, get Dargo out on turn 1 or 2. And then on turn 2 or 3 you play Jeska, make him triple damage and swing for 21 commander. Turn 1 win is possible and honestly...not thaaaat much of a "Christmas Land" thing. I explain a few T1 wins below.
You got a whole buncha 0 drops so a decent hand might be something like
1st turn: Mountain, 3 Zero drops, sac all three play Dargo.
2nd turn: Have some ramp to play Jeska and swing for game
And turn 2 lethal is preeetty common tbh, turn 3 lethal has gotta be like 80%+ chance. Of course stupid losers playing dumb cards like STP, FOW, Pact of Negation, Path To Exile and other such things really suck to play against but screw them for plotting against me personally for some reason.
Turn 1 win is totes possible. Here's a picture of me having it in hand but screwing it up cause im bad at magic and stupid. (other player conceded anyway)
If I had played the mountain instead of the Tomb. I could have went:
Mountain tap for Courier, Crypt, LED, Kobold, Bauble. Tap crypt to play pinions and get a treasure. Now only tomb in hand. Sac LED for RRR, Sac bauble to check random card, sac treasure to get another R. Dargo costs R, last 3 plays Jeska, triple damage, sac Courier to give Dargo haste and swing.
There's other hands that could do it. Basically need to get to "8RRR mana" (counting each 0 drop played as 2 mana towards that) and have one of the spells that costs 1 red and can give haste.
Turn 1: Jeweled Lotus, Lotus Petal, Mana Crypt. Add all the mana, sac everything. Play Dargo/Jeska and Reckless Charge Dargo
Would work too and thats just 4 cards. Heck you dont even need a land!
Some card choices and cool interactions:
Treasures are cool! They're basically a Lotus towards Dargo. As each one sacs to reduce him by 2 and adds a red. Prized Statue is really cool here as it just takes Prized Statue and any other artifact/creature on board to reduce Dargo by 6 and leave another treasure to help play Jeska.
Skirk Prospector is basically a treasure here and can make your other goblins treasure as well and set up some really cool plays. Lion's Eye Diamond and Jeweled Lotus essentially add 5 towards Dargo. A lotta times you can drop so much of your hand that LED is only costing you 1-2 cards anyway.
Rituals are there cause you'll just often need that 1 extra mana to play Jeska a turn early or even on the same turn as Dargo with enough stuff. I tried to keep the removal cheap or free since you'll often be tapping each turn and its nice to get rid of early blockers so they dont get another chance to untap and draw removal.
The "combo" with Phyrexian Altar is if you've already sac'd 3 things towards Dargo that turn and then you play and sac Dargo to altar he adds a red mana and reduces his own cost by another 2, so you can play him again for the one red you just added from alatar and sac him infinitely and so on. This makes Jeska lethal the next time you play her since you've just played your commander a million times. Just be aware you'll always have to had reduced Dargo to one red already before you sac him to the altar for it to go infinite. Thermopod can be another Altar. Engineer can grab the Altar.