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She combos really well with Food
Second, I needed to do so with enough cards left in my library to not deck before winning
when I think about adding lifegain cards to my decks, Im looking for this kind of incidental or burst lifegain, not lifelink creatures
Creatures (13) Lands (29) 2 Forest 2 Snow-Covered Forest 2 Gemstone Mine 1 Boros Garrison 1 Selesnya Sanctuary 1 Sunhome, Fortress of the Legion 2 Gruul Turf 2 Breeding Pool 1 Ghost Quarter 4 Simic Growth Chamber 1 Vesuva 3 Tolaria West 1 Bojuka Bog 1 Slayers' Stronghold 1 Cavern of Souls 1 Radiant Fountain 1 Field of the Dead 2 Castle Garenbrig Spells (18) Apart from Okos role in transforming and fighting hate cards, its worth noting that Oko itself is a hate card, in that some strategies are fundamentally weak against the card
Kill creatures (yours and your opponents) to make him as big as possible