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'Whenever you cast an instant or sorcery spell, this creature gets +3/+0 until end of turn.
'Whenever you cast an instant or sorcery spell, this creature gets +3/+0 until end of turn.
'Whenever you cast an instant or sorcery spell, this creature gets +3/+0 until end of turn.
'Whenever you cast an instant or sorcery spell, this creature gets +3/+0 until end of turn.
'Whenever you cast an instant or sorcery spell, this creature gets +3/+0 until end of turn.
'Whenever you cast an instant or sorcery spell, this creature gets +3/+0 until end of turn.
'Whenever you cast an instant or sorcery spell, this creature gets +3/+0 until end of turn.
'Whenever you cast an instant or sorcery spell, this creature gets +3/+0 until end of turn.
'Delve (Each card you exile from your graveyard while casting this spell pays for {1}.) Flying {X}, {T}, Exile X cards from your graveyard: Target creature gets -X/-X until end...
'This creature gets +1/+1 for each creature card in your graveyard. {X}{B/G}, {T}, Sacrifice another creature: Search your library for a creature card with mana value X or less, put...
'Slag Fiend's power and toughness are each equal to the number of artifact cards in all graveyards.
'This creature gets +1/+1 for each creature card in your graveyard. {X}{B/G}, {T}, Sacrifice another creature: Search your library for a creature card with mana value X or less, put...