"When you cast a spell with convoke, tap your army to make it cheapereach creature pays either or one mana of its color." Official Rules Reference From the Magic: The Gathering Comprehensive Rules Section 702.51 702.51 Convoke KEYWORD ABILITY Official rule text from the Magic: The Gathering Comprehensive Rules document
Auntie Ool, Cursewretch Auntie Ool, Cursewretch is among the narrower options on the list since its card draw is restricted to your ability to put -1/-1 counters on creatures, but that's far from hard
The subgrades tell me information about the centering, corners, edges, and surface
Reverse image searching and typing "Pokemon Big Box 2002" (copyright year on the back) turn up nothing
Let Tom teach you how to be the best dark lord you can be as we review the deck and suggest new cards to add
Indestructible lands stick around, so decks with Armageddon might also want to consider Darksteel Citadel and anything similar