Cheapest priced copy (Ixalan): $0.49 at Card Kingdom, near mint, their price list as of .
Tocatli Honor Guard 
Creature — Human Soldier · 1/3 · Rare · Ixalan Promos · #42p
Creatures entering don't cause abilities to trigger.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
3 printings · $0.49 to $10.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Ixalan Promos | 42p | Rare | $0.79 | $10.99 |
| Ixalan Promos | 42s | Rare | — | $2.79 |
| Ixalan | 42 | Rare | $0.49 | $0.49 |
6 rulings from Wizards of the Coast
- 29 September 2017Replacement effects, such as a permanent entering the battlefield tapped or with counters on it, are unaffected. Abilities that apply “as [this creature] enters the battlefield” are replacement effects.
- 29 September 2017Tocatli Honor Guard’s ability stops a creature’s own enters-the-battlefield triggered abilities as well as other triggered abilities that would trigger when a creature enters the battlefield. This includes abilities that would trigger when Tocatli Honor Guard itself enters the battlefield.
- 29 September 2017Triggered abilities use the word “when,” “whenever,” or “at.” They’re usually written as “[Trigger condition], [effect].”
- 29 September 2017If Tocatli Honor Guard and another creature enter the battlefield at the same time, neither creature entering the battlefield will cause triggered abilities to trigger.
- 29 September 2017The trigger event doesn’t have to specify “creatures” entering the battlefield. For example, Contraband Kingpin has an ability that says “Whenever an artifact enters the battlefield under your control, scry 1.” If an artifact creature enters the battlefield under your control, that ability won’t trigger. If a noncreature artifact enters the battlefield under your control, the ability will trigger.
- 29 September 2017Look at the permanent as it exists on the battlefield, taking into account continuous effects, to determine whether any triggered abilities will trigger. For example, if you control March of the Machines, which says, in part, “Each noncreature artifact is an artifact creature,” each artifact will be a creature at the time it enters the battlefield and will not cause triggered abilities to trigger.