pokemon dragon energy card GGT - Evolves from null Ruleδ Rainbow Energy provides Colorless Energy Damaged Dragon Energy - Spnja

Also shown at D23 was a separate promo card for Disney mascot Mickey Mouse in his garb from 1938 short Brave Little Tailor, which will also appear in The First Chapter

Although many veteran players find this card to be useless, it is a great part of the process of moving through decks and experience levels

Since you can't use that ability and quest at the same time anyway, the extra lore is sort of wasted

Being able to proliferate for free while ramping

For example, if you choose to counter target spell, return target nonland permanent to its owner's hand, and have target player draw a card, that permanent will be on the battlefield while that spell is countered (and may modify, affect, or trigger on that event) but will not be on the battlefield while that player draws a card