Goldspan Dragon, A dragon which produces treasure, whenever it attacks or is targeted by a spell, and also doubles the value of your treasure tokens
The restriction that only land creatures can attack applies only to the combat phase created by Bumi, Unleashed, not to any other combat phases that might occur that turn
Many recent formats have been dominated by huge creatures like Lovestruck Beast or Uro, which make it difficult to imagine using such attack triggers more than once
Emet-Selch is a dastardly creature because not only does he reduce the cost of Spells you cast from your graveyard, he also just lets you cast spells from your yard whenever your opponents have lost life
Right out of the gate, being a Zombie that can cheaply produce more Zombies is great for the archetype
But how do you know its strong