Your 2/2 Black Knight created by Riftmarked Knight would be better without the "Haste" ability. The Riftmarked Knight does have reminder text to say that it gains haste, but a reading of the Suspend rule shows us that it's only temporary:
702.59a Suspend is a keyword that represents three abilities. The first is a static ability that functions while the card with suspend is in a player's hand. The second and third are triggered abilities that function in the exile zone. "Suspend N -- [cost]" means "If you could begin to cast this card by putting it onto the stack from your hand, you may pay [cost] and exile it with N time counters on it. This action doesn't use the stack," and "At the beginning of your upkeep, if this card is suspended, remove a time counter from it," and "When the last time counter is removed from this card, if it's exiled, play it without paying its mana cost if able. If you can't, it remains exiled. If you cast a creature spell this way, it gains haste until you lose control of the spell or the permanent it becomes."
702.59a Suspend is a keyword that represents three abilities. The first is a static ability that functions while the card with suspend is in a player's hand. The second and third are triggered abilities that function in the exile zone. "Suspend N -- [cost]" means "If you could begin to cast this card by putting it onto the stack from your hand, you may pay [cost] and exile it with N time counters on it. This action doesn't use the stack," and "At the beginning of your upkeep, if this card is suspended, remove a time counter from it," and "When the last time counter is removed from this card, if it's exiled, play it without paying its mana cost if able. If you can't, it remains exiled. If you cast a creature spell this way, it gains haste until you lose control of the spell or the permanent it becomes."
Great thread! Great resource for token info.
-Dave