+1/+1 counters, -1/-1 counters, poison counters, loyalty counters, filibuster counters (yes, that's real)
Phyrexian Rager Dusk Legion Zealot is often a better card than Phyrexian Rager as it's 1 mana cheaper
Kamber, the Plunderer, gives you one life and generates Blood tokens whenever one of your opponents' creatures dies, giving you more instant draw options or letting you goad your opponents' creatures by sacrificing your Blood to his partner, Laurine, the Diversion
One of the challenges of R&D has with the Invitational card is to maintain the spirit of the original while keeping the card balanced and synergistic with the current block
Buy Pokmon 8" plushies from Walmart
A small pro tip (for your sanity): if youre mixing sources, sleeve everything the same