Joker Goblin

Gambler- At the beginning of your upkeep,
you may reveal the top card of your library.
If it's a non-land card, flip two coins. For
each one heads, destroy target artifact or
enchantment. For each one tails, gain 5 life.
If it's a land card, flip two coins. For each
one heads, destroy target land you control.
For each one tails, you lose 4 life.
"Chances upon chances upon chances."