There's no upkeep cost and no way around it with the exception of removing Moat itself
Its first chapter provides a situational Oblivion RingOblivion Ring, its next two chapters provide a temporary PropagandaPropaganda to help thwart go-wide strategies, and its final chapter lets you net some Treasure tokens so long as at least one of your opponents has a creature with power four or greater
Ram Through is awesome in most green creature decks, but with all these gigantic monsters in the deck, it could positively end someone
Id consider this if I just wanted more mana fixing in a 3+ color typal deck, maybe in something like 5-color slivers or dragons, but most 2-cost mana rocks you plug in will be better
The difference is marginal, but the fact remains that Spike Cannibal is disastrous for the +1/+1 counter player at the table
To help navigate that choice, consider three factors: Your land count : If youre light on mana, chances are your hand is full of spells, so playing the card for its normal cost may help you influence the board more efficiently