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That alone is well worth the extra mana

Ricardo Silva When one thinks of the color red in Magic, it is hard not to immediately think about Lightning Bolt

The extra part of generating mana of any color gets better if you have changelings, aliens, or doctors

Sunfrill Imitator as a cheap-ish Dino that can make big attacks as you unleash your larger Dinosaurs is a nice pairing with Belligerent Yearling to get these decks a little lower to the ground

BearscapeBearscape While Words of Wilding forces you to pay and skip drawing a card (which is never that fun), Bearscape lets you chuck resources that you might not use again by exiling two cards from your graveyard and paying to produce a 2/2 Bear token, which pairs beautifully with 18

One of the best devoid cards in MTG, this is at its best in stax decks and decks that produce lots of tokens or decks that work with symmetrical sacrifice effects