Cards like Grim Giganotosaurus and Hunting Velociraptor offer powerful abilities and alternate casting costs for Dinosaur-themed decks
At first I was going to discount Mizzium Tank, but given some of the Izzet decks that want to cast lots of noncreature spells on a turn, it might be worth reconsideration
Since two triggers are trying to go on the stack at the same time, first your triggers are put on the stack since you are the Active Player (AP), then your opponent's triggers are placed on the stack on top since they are the Non-Active Player (NAP)
something as basic as a free untap can be powerful indeed
Given how many cards there are that either want to die, or that make sacrificial Thopters or Servos, this cost isnt really a drawback at all, and being able to cheat in one of the big old Creatures from earlier in the list, or even something like Darksteel Forge, which gives all of your Artifacts indestructible, losing three of anything is always worth it
Creature - Elemental Color tag templates(None) Vinelasher Kudzu Landfall Whenever a land you control enters, put a +1/+1 counter on this creature