Fifth Dawn

Whenever Fangren Pathcutter attacks, attacking creatures gain trample until end of turn.

Haste Iron-Barb Hellion can't block.

Flying (This creature can't be blocked except by creatures with flying or reach.) {R}: Furnace Whelp gets +1/+0 until end of turn.

Nim Grotesque gets +1/+0 for each artifact you control.

Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.) Flying

Plasma Elemental can't be blocked.

Enchant artifact Enchanted artifact has "At the beginning of your upkeep, sacrifice this artifact unless you pay its mana cost."

Destroy target blocking creature.

When you control no other artifacts, sacrifice Synod Centurion.

Sunburst (This enters the battlefield with a +1/+1 counter on it for each color of mana spent to cast it.) Remove a +1/+1 counter from Lunar Avenge...

Sunburst (This enters the battlefield with a charge counter on it for each color of mana spent to cast it.) {T}, Remove X charge counters from Infu...

Vigilance {W}: Loxodon Stalwart gets +0/+1 until end of turn.

{X}{1}: Chimeric Coils becomes an X/X Construct artifact creature. Sacrifice it at the beginning of the next end step.

{1}{W}: Return target artifact card with converted mana cost 1 or less from your graveyard to your hand.