ARMORED SCRAPGORGER Armored Scrapgorger should top your lists for mana dorks if youre not concerned with having an on-theme creature type
Some more specific cards, like always, might be better in a smattering of decks like Sozens Comet, but I try to find the cards that can go in most decks
How do I choose the right card sleeves for my deck
This white-blue-green deck focuses on counters, blending expectations for lovers of both MTG and FF
Helga, Skittish Seer One green, one white, one blue legendary creature Frog Druid 1/3 Mythic Rare Whenever you cast a creature spell with mana value 4 or greater, you draw a card, gain 1 life, and put a +1/+1 counter on Helga, Skittish Seer
Im pretty sure the only reason mono-red has nearly as many +1/+1 counter decks as blue and black is because of Ashling the Pilgrim, which is a funny deck, but not likely a great fit for the 99