Sekki Fighting

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This deck is a janky experiment. It tries to abuse Sekki, by running:
• "double counters" effects
• "double tokens" effects
• fighting
The idea is you keep getting Sekki to fight other creatures, making lots of tokens along the way. Eventually Sekki dies; it gets put it in the graveyard (not command zone), then bring it back by sacrificing 8 tokens, and continue. Other notes:
• I have a few animate artifact and animate land effects, so Sekki can fight them. (It's odd removal.)
• Static anthem effects (e.g. Caged Sun) would be strange in this deck, so I ultimately decided to avoid them. With an anthem out, the (0/0 base) Sekki doesn't actually die when losing all of its counters. Sekki continues to make tokens though when damaged (the rulings on Sekki are weird). Normally that would be great; for example, if you have a Pariah's Shield on it, you would have an unkillable (by damage) Sekki, that spits out lots of tokens. However, a 0/0 Sekki with a +1/+1 anthem doesn't fight for much, and also the rulings on this are a little odd to explain to people. So I decided that for this deck this interaction wasn't worth it, and I avoid it. Maybe a different deck build could abuse this.
 
Mana Acceleration (17): General (1): Spells (35): Sideboard (Omitted/Cut card ideas):
1 Golden Guardian // Gold-Forge Garrison 1 Sekki, Seasons' Guide 1 Arena 1 Time to Feed
1 Cultivate   1 General's Regalia 1 Wild Instincts
1 Fertilid Creatures (12): 1 Helm of the Host 1 Strength of the Tajuru
1 Gyre Sage 1 Karn, Silver Golem 1 Pariah's Shield 1 Increasing Savagery
1 Hunting Wilds 1 Bloodspore Thrinax 1 Triangle of War 1 Vastwood Hydra
1 Kodama's Reach 1 Grothama, All-Devouring 1 Ancient Animus 1 Soul's Might
1 Marwyn, the Nurturer 1 Halana, Kessig Ranger 1 Biogenic Upgrade 1 Vivien of the Arkbow
1 Nissa, Who Shakes the World 1 Iridescent Hornbeetle 1 Branching Evolution 1 Vivien, Arkbow Ranger
1 Nissa's Pilgrimage 1 Kalonian Hydra 1 Doubling Season 1 Death's Presence
1 Ordeal of Nylea 1 Kamahl, Fist of Krosa 1 Epic Confrontation 1 Ripjaw Raptor
1 Ranging Raptors 1 Loyal Guardian 1 Garruk, Primal Hunter 1 Ugin, the Spirit Dragon
1 Selvala, Heart of the Wilds 1 Steelbane Hydra 1 Hunt the Weak 1 Warbriar Blessing
1 Skyshroud Claim 1 Ulvenwald Tracker 1 Hydra's Growth 1 Cartouche of Strength
1 Traverse the Outlands 1 Vigor 1 Inscription of Abundance 1 Fecundity
1 Vastwood Surge 1 Vorinclex, Monstrous Raider 1 Mutant's Prey 1 Hungering Hydra
1 Verdant Confluence   1 Outmuscle 1 Broodhatch Nantuko
1 Viridian Joiner   1 Parallel Lives 1 Hornet Nest
    1 Pounce 1 Saber Ants
Lands (25):   1 Predatory Urge 1 Blade of the Bloodchief
1 Bala Ged Recovery // Bala Ged Sanctuary   1 Prey Upon 1 Triskelavus
1 Forge of Heroes   1 Primal Might 1 Triskelion
1 Gaea's Cradle   1 Primal Vigor 1 Walking Ballista
1 Karn's Bastion   1 Primeval Bounty 1 Ohran Frostfang
1 Kazandu Mammoth // Kazandu Valley   1 Return of the Wildspeaker 1 Hardened Scales
1 Khalni Ambush // Khalni Territory   1 Rishkar's Expertise 1 Pir, Imaginative Rascal
1 Mosswort Bridge   1 Savage Punch 1 Monstrous Onslaught
1 Opal Palace   1 Savage Stomp 1 Acorn Catapult
1 Oran-Rief, the Vastwood   1 Savage Swipe 1 Rishkar's Expertise
1 Vastwood Fortification // Vastwood Thicket   1 Setessan Tactics 1 Soul's Majesty
1 War Room   1 Solidarity of Heroes 1 Mycoloth
23 Forest   1 Soul's Majesty 1 Rite of Passage
1 Sol Ring   1 Titania's Song 1 Evolution Sage
    1 Titanic Brawl 1 Sword of Truth and Justice
    1 Unnatural Aggression 1 Animation Module
    1 Vivien, Nature's Avenger 1 Contagion Engine