Alpha s Grizzly Bears was the first card with the creature type, and it also gave us the slang name of bears for the low-mana 2/2 creature found in many MTG sets, often a creature with no abilities (vanilla) back when those were more common
"Both is good" Sure, you can't legally cast both sides of a MDFC commander at the same time, but we're playing Commander so there are plenty of ways to make a copy of a permanent
I like Diregraf Captain over the others as it gives you sudo board wipe protection
The caveat being that the Alpha sheet is missing Volcanic Island, Circle of Protection Black, Island (C), Swamp (C), Forest (C), Mountain (C), and Plains (C)
However, with ex cards comes a significant risk
When the holofoil roll runs out mid-production and a new roll is not spliced to the sheet, a dramatic error (like the Melmetal above) occurs