Colour is a general indication of a cards thematic and strategic place in the game
It comes down early and powers out your key creatures then serves as a value engine later on when things get grindy
The saving grace for all these cards is that they can always be cast for 1 mana to secure your next land drop, making them great early on without being embarrassing later
Cursing a creature doesnt remove it but it can help slow your opponent down so Vantress Transmuter is perfectly desired here to slow down opposition, while Curse of the Werefox works in removal
To cast a suspended card, the last time counter has to get removed either by suspends triggered ability or another effect
Some of these costing 1 mana means that, actually, we are not likely to get an infinite loop10 unless we somehow get the lands to have haste, but with the volume of land we expect to have, we should easily get to a point where we have upwards of 10 landfall triggers in a turn, which is somewhat mental