March of the Machine

Astral Wingspan | Enchantment | Aura | Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.) Enchant creature When Astral Wingspan enters the battlefield, draw a card. Enchanted creature gets +2/+2 and has flying. | Joseph Weston

Corruption of Towashi | Enchantment | | When Corruption of Towashi enters the battlefield, incubate 4. (Create an Incubator token with four +1/+1 counters on it and "{2}: Transform this artifact." It transforms into a 0/0 Phyrexian artifact creature.) Whenever a permanent you control transforms or a permanent enters the battlefield under your control transformed, you may draw a card. Do this only once each turn. | Artur Nakhodkin

Invasion of Arcavios // Invocation of the Founders | Battle // Enchantment | Siege // | (As a Siege enters, choose an opponent to protect it. You and others can attack it. When it's defeated, exile it, then cast it transformed.) When Invasion of Arcavios enters, search your library, graveyard, and/or outside the game for an instant or sorcery card you own, reveal it, and put it into your hand. If you search your library this way, shuffle. // Whenever you cast an instant or sorcery spell from your hand, you may copy that spell. You may choose new targets for the copy. | Dmitry Burmak