So Now What
If you discover the play style of two Colors that interest you, you can craft a deck with a unique blend of the different styles
Consign to Memory A super common sideboard card in Modern decks, Consign to Memory counters big Eldrazi, sure, but its also a 1-mana answer to a storm win, as it answers a card like Tendrils of Agony
Combed with cards like Elvish Archdruid, you can tap your creatures for mana the turn they come out to get immediate benefits from them
Unlike Modern, where splashing into a third color is incredibly easy thanks to the combination of fetch lands and shock lands, in Historic, adding an extra colorespecially to a very aggressive deckdoes come with a cost
Gadrak is loaded with value at his meager 3cmc, being a 5/4 flyer that can generate a ton of Treasure tokens -- ramp, in Mono Red