Metalcraft — Whenever Vedalken Humiliator attacks, if you control three or more artifacts, creatures your opponents control lose all abilities and have base power and toughness 1/1 until end of turn.
TrampleWhenever Geode Golem deals combat damage to a player, you may cast your commander from the command zone without paying its mana cost. (You still pay any additional costs.)
FlyingWhen Sphinx of Uthuun enters, reveal the top five cards of your library. An opponent separates those cards into two piles. Put one pile into your hand and the other into your graveyard.
Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for .)When Maverick Thopterist enters, create two 1/1 colorless Thopter artifact creature tokens with flying.
FlyingWhenever Conundrum Sphinx attacks, each player chooses a card name. Then each player reveals the top card of their library. If the card a player revealed has the name they chose, that player puts it into their hand. If it doesn't, that player puts it on the bottom of their library.
Landfall — Whenever a land you control enters, you may put a quest counter on Khalni Heart Expedition.Remove three quest counters from Khalni Heart Expedition and sacrifice it: Search your library for up to two basic land cards, put them onto the battlefield tapped, then shuffle.